Chữ số hàng đơn vị của 2024 2022
Như bạn có thể thấy, sức mạnh tăng lên nhanh chóng. Vì vậy, thật hữu ích khi nhận thấy rằng chúng ta chỉ cần xem xét chữ số hàng đơn vị khi đánh giá các lũy thừa lớn. Ví dụ: chữ số hàng đơn vị của 132 bằng chữ số hàng đơn vị của 32, chữ số hàng đơn vị của 135 bằng chữ số hàng đơn vị của 35, v.v. Show Tiếp tục, ta được 131 có chữ số hàng đơn vị là 3 132 có chữ số hàng đơn vị là 9 133 có chữ số hàng đơn vị là 7 134 có chữ số hàng đơn vị là 1 135 có chữ số hàng đơn vị là 3 136 có chữ số hàng đơn vị là 9 137 có chữ số hàng đơn vị là 7 138 có chữ số hàng đơn vị là 1 Lưu ý rằng một mô hình đẹp xuất hiện. Chúng tôi nhận được. 3-9-7-1-3-9-7-1-3-9-7-1-… Như bạn có thể thấy, mô hình lặp lại sau mỗi 4 lũy thừa. Tôi muốn nói rằng "chu kỳ" bằng 4 Bây giờ chúng ta biết chu kỳ là 4, chúng ta có thể thực hiện một quan sát rất quan trọng Khi n là bội số của 4 thì chữ số hàng đơn vị của 13n là 1 Đó là, 134 có chữ số hàng đơn vị là 1 138 có chữ số hàng đơn vị là 1 1312 có chữ số hàng đơn vị là 1 1316 có chữ số hàng đơn vị là 1 . . vân vân Lúc này ta tìm được chữ số hàng đơn vị của 1335 Vì 32 là bội của 4 nên 1332 phải có chữ số hàng đơn vị là 1. Từ đây, chúng ta sẽ tiếp tục mô hình Hệ thống số là một phương pháp biểu diễn các số trên dòng số với sự trợ giúp của một tập hợp các ký hiệu và quy tắc. Các ký hiệu này nằm trong khoảng từ 0-9 và được gọi là chữ số. Hệ thống Số được sử dụng để thực hiện các phép tính toán học, từ các phép tính khoa học tuyệt vời đến các phép tính như đếm số lượng Đồ chơi cho Trẻ em hoặc số lượng sôcôla còn lại trong hộp. Hệ thống số bao gồm nhiều loại dựa trên giá trị cơ bản cho các chữ số của chúng Chu kỳ của các số. Chu kỳ của bất kỳ số nào chủ yếu tập trung vào chữ số hàng đơn vị của nó. Mỗi chữ số hàng đơn vị có kiểu lặp lại riêng khi nâng lên bất kỳ lũy thừa nào. Khái niệm này được sử dụng rất nhiều trong khi giải các bài toán năng khiếu. Khái niệm về chu kỳ của các số có thể được học bằng cách tìm ra các chữ số hàng đơn vị của tất cả các số có một chữ số từ 0 đến 9 khi được nâng lên các lũy thừa nhất định. Những con số này có thể được phân loại thành ba loại được liệt kê như sau 1. Các chữ số 0, 1, 5 và 6. Ở đây, khi mỗi chữ số này được nâng lên một lũy thừa bất kỳ, thì chữ số hàng đơn vị của đáp án cuối cùng chính là số đó ví dụ 1. 5 ^ 2 = 25: Unit digit is 5, the number itself. 2. 1 ^ 6 = 1: Unit digit is 1, the number itself. 3. 0 ^ 4 = 0: Unit digit is 0, the number itself. 4. 6 ^ 3 = 216: Unit digit is 6, the number itself. Dưới đây là một số câu hỏi dựa trên khái niệm trên Câu hỏi 1. Tìm chữ số hàng đơn vị của 416345 Trả lời. Chỉ cần tìm 6345 sẽ cho 6 là chữ số hàng đơn vị, do đó chữ số hàng đơn vị của 416345 là 6 Câu hỏi 2. Tìm chữ số hàng đơn vị của 23534566 Trả lời. Tìm 534566 biết chữ số hàng đơn vị là 5 nên chữ số hàng đơn vị của 23534566 là 5 2. Chữ số 4 và 9. Cả hai chữ số 4 và 9 này đều có tích hai chữ số khác nhau là chữ số hàng đơn vị ví dụ 1. 4 ^ 2 = 16: Unit digit is 6. 2. 4 ^ 3 = 64: Unit digit is 4. 3. 4 ^ 4 = 256: Unit digit is 6. 4. 4 ^ 5 = 1024: Unit digit is 4. 5. 9 ^ 2 = 81: Unit digit is 1. 6. 9 ^ 3 = 729: Unit digit is 9. Có thể nhận thấy các chữ số hàng đơn vị 2, 4, 8, 6 lặp lại sau khoảng thời gian bốn số. Tương tự, 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 94 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 96 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 98
61 30 31 32
33 64 35 36 37_______10_______8 37_______10_______0 2 61 32 Java2 63 2 64 2 65 2 66
2 67 2 68 61 // Efficient C++ program to 061 // Efficient C++ program to 2 64 65 64 67 64 69 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 62 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 // find unit digit of x^y. 7// find unit digit of x^y. 8// find unit digit of x^y. 961 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 69 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 91 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 94 64 #include 9using 0using 1
61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 31 61 32 61 61 33 61 606 // Efficient C++ program to 2 608 609 610 611 61 60 61 615 616 617 618 619 61 32 32
623 Python3624 625
626 627 628 629
61 631 61_______2_______33 61 635 636 // find unit digit of x^y. 861 61 640 61 642 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 645_______2_______46 647 648 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 635_______2_______36 652_______2_______53 654 655 using 461 61 30 635 61 662 663 664 616 617 618 668
669 C#2 63 2 64
673
2 67 675 60 61 // Efficient C++ program to 061 // Efficient C++ program to 2 64 65 64 67 64 69 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 62 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 67 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 69 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 91 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 94 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 96
61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 31 61 32 61 61 33 61 606 // Efficient C++ program to 2 608 621 61 60 61 625 61 32 32
629 PHP630 631
62 63 635 65_______2_______37 617 639 640 60 61 62 61 64 61_______2_______47 648
61 69 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 91 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 94 656 657 656 659 639 // find unit digit of x^y. 9656 663 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 647 666 647 653 637 670
61 30 647 // find unit digit of x^y. 932
676 677 678
679 680 Javascript681
682
62 63 635 687 60 61 61 62 61 64 61_______2_______95
61 69 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 91 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 93 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 902 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 98
61 30 31 32
676 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 910
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 911
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 912 Đầu ra 6 đầu ra. 6 Thời gian phức tạp. O(y), trong đó y là lũy thừa Cách 3 (Trực tiếp dựa trên tính chất tuần hoàn của chữ số cuối cùng) x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 9 Vì vậy, ở đây chúng tôi trực tiếp sửa đổi lũy thừa y bằng 4 vì đây là lũy thừa cuối cùng sau khi bắt đầu lặp lại tất cả các số này C++x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 913 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 914 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 915 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 916
60 61
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 920 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 922_______2_______4 67 64 69 60 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 929 61_______3_______31 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 932 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 934 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 937 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 939
61_______3_______41 61_______3_______43 61_______3_______45 61 30 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 948_______2_______4 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 950 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 951 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 952 32
64 35 60 61 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 959 61 61____3_______62 61____3_______64 61____3_______66 61____3_______68 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 969 61 30 2 61 32 Javax | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 974 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 975 2 65 2 66 2 65 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 979
2 67 2 68 61 61_______3_______20 61 // Efficient C++ program to 2 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 922 64 67 64 69 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 929 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 998 using 4// find unit digit of x^y. 9
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 934 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 306 using 0640 309_______10_______10 616 312 616 // find unit digit of x^y. 961 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 941 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 943 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 945 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 948 64 326 using 4328 61 32 61 61 61 606 // Efficient C++ program to 2 608 337 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 342 343 344 345 // find unit digit of x^y. 961 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 962 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 351 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 966 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 355 61 61 32 32
360 Python3361 362 2 65 364
365 628 367
61 369 61 371 636 371____2_______55 using 4x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 61 378 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 381 636 using 0384 385 386 636 386 655 616 312 616
61 394 61 396 61 398 61 30 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 948_______2_______4 2 603 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 951 2 605 655 using 4640
2 609 371 636 343 2 613 636 345 61 2 617 2 618 2 619 663 2 621
2 622 C#2 623 2 624
673
2 67 2 68 61 61_______3_______20 61 // Efficient C++ program to 2 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 922 64 67 64 69 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 929 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 931
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 934 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 937 309______3_______39 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 941 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 943 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 945 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 948 64 2 665 61 32 61 61 2 670 61 606 // Efficient C++ program to 2 608 2 675 61 60 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 959 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 962 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 351 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 966 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 2 689 61 61 32 32
629 PHP630 2 696 2 624
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 920 635 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 922 637 617_______2_______39 640 60 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 929 61 637 636 637 // Efficient C++ program to 1261 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 934 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 94 639 // Efficient C++ program to 20x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 639 636 639 // Efficient C++ program to 25
61_______3_______41 61_______3_______43 61_______3_______45 61 30 // Efficient C++ program to 34637 617 639 // Efficient C++ program to 3832
2 670 637 // Efficient C++ program to 42639 // Efficient C++ program to 4461 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 962 351 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 966 677 // Efficient C++ program to 50637 617 639 619
679 680 Javascript681
2 624
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 920 635 // Efficient C++ program to 6260 61 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 929 61_______3_______31 61 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 934 61_______3_______36 // Efficient C++ program to 74x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 939
61_______3_______41 61_______3_______43 61_______3_______45 61 30 // Efficient C++ program to 8532
2 670
61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 962 351 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 966
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 911
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 912 Đầu ra 3 Thời gian phức tạp. O(log n) Tiếp cận. Phương pháp khai triển nhị thứcSau đây là các bước tìm chữ số hàng đơn vị của x lũy thừa y bằng phương pháp Khai triển nhị thức 1. Xử lý các trường hợp đặc biệt Nếu y bằng 0, trả về 1 vì bất kỳ số nào được nâng lên lũy thừa 0 đều bằng 1 2. Tính số hạng thứ y trong khai triển của (x+10)^y sử dụng định lý nhị thức Thuật ngữ thứ y trong khai triển được cho bởi. C(y, 0)x^y10^0 + C(y, 1)*x^(y-1)*10^1 + … + C(y, y)x^010^y 3. Tìm chữ số hàng đơn vị của số hạng thứ y Chữ số hàng đơn vị của số hạng thứ y bằng chữ số tận cùng của số hạng thứ y 4. Trả về chữ số hàng đơn vị tìm được ở bước 3 là kết quả C++
60 61
64 // find unit digit of x^y. 0364 67 64 // find unit digit of x^y. 0761_______3_______36 // find unit digit of x^y. 10x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 // find unit digit of x^y. 1361 32 61 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 // find unit digit of x^y. 18x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 2 61 61 32 61 64 // find unit digit of x^y. 26x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 951_______718_______28 61 64 // find unit digit of x^y. 3161 30 // find unit digit of x^y. 3432
64 // find unit digit of x^y. 3761 // find unit digit of x^y. 39// find unit digit of x^y. 4061 // find unit digit of x^y. 42// find unit digit of x^y. 4361 30 2 61 32
Java2 65 // find unit digit of x^y. 50
606 2 67 // find unit digit of x^y. 5361 606 // Efficient C++ program to 2 64 // find unit digit of x^y. 5864 67 64 // find unit digit of x^y. 07x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 // find unit digit of x^y. 65using 0// find unit digit of x^y. 67
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 32 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 // find unit digit of x^y. 76using 0// find unit digit of x^y. 67
x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 32 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 // find unit digit of x^y. 8764_______718_______89 using 4// find unit digit of x^y. 91x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 64 // find unit digit of x^y. 94using 4// find unit digit of x^y. 9x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 // find unit digit of x^y. 9961 32
61 606 // Efficient C++ program to 2 608 #include 06x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 #include 08618 617 // find unit digit of x^y. 8619 // find unit digit of x^y. 40x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 #include 08616 617 618 619 // find unit digit of x^y. 4361 32 32 Python3628 #include 2561 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 386 636_______2_______36 using 0384 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 // find unit digit of x^y. 861 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 936 371 636 636 using 0384 x | power 2 | power 3 | power 4 | Cyclicity 0 | ................................. | ... repeat with 0 1 | ................................. | ... repeat with 1 2 | 4 | 8 | 6 | ... repeat with 2 3 | 9 | 7 | 1 | ... repeat with 3 4 | 6 |...................... | ... repeat with 4 5 | ................................. | ... repeat with 5 6 | ................................. | ... repeat with 6 7 | 9 | 3 | 1 | ... repeat with 7 8 | 4 | 2 | 6 | ... repeat with 8 9 | 1 | ..................... | ... repeat with 97 30 using 061 #include 47636 #include 49312 using 4640 653 653 386 Chữ số hàng đơn vị của 1 1 2 2 3 3 4 4 5 5 6 6 là bao nhiêu?Trả lời. Chữ số hàng đơn vị của tổng biểu thức đã cho là 9 .
Chữ số hàng đơn vị của 3 2023 là bao nhiêu?Chữ số hàng đơn vị cho 3^(4n+k) cho n bất kỳ số nguyên nào sẽ là 3 cho k=0, 9 cho k=1, 7 cho k=2 & 1 cho k=3. Power 2023 có thể được viết là 4*500 + 3, tức là n= 500 & k=3. Khi đó chữ số hàng đơn vị của 3^2023 là 1 (vì k=3).
Chữ số hàng đơn vị của 34 52 27 23 36 12 là bao nhiêu?Vậy chữ số hàng đơn vị là 8 .
Chữ số ở hàng đơn vị của 2017 2017 là bao nhiêu?vậy chữ số hàng đơn vị là 7 . |