what is the unit digit of the expansion of 13^2012?
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5
Step-by-step explanation:
Therefore the units digit of 12^12 is 6. The last digits of powers of 3 follow a cycle of 3, 9, 7, 1. Therefore the units digit of 13^13 is 3. The units digits of 4 follow a cycle of 4, 6.
Answered by
3
Step-by-step explanation:
Therefore the units digit of 12^12 is 6. The last digits of powers of 3 follow a cycle of 3, 9, 7, 1. Therefore the units digit of 13^13 is 3.
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