What is the unit digit in 653^723? A] 7 B] 1 C] 2 D] 4
Question
Solution 1
The unit digit of a number raised to a power can be found by looking at the cycle of the last digit.
For example, the number 653 ends in 3. The powers of 3 follow a cycle of 4:
- 3^1 ends in 3
- 3^2 ends in 9
- 3^3 ends in 7
- 3^4 ends in 1
- 3^5 ends in 3 (the cycle repeats)
So, the cycle of t Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob
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