SOLUTION: If n is a positive integer, which of the following cannot be the units digit of 7^n?
a) 1 b) 3 c) 5 d) 7 e) 9
Algebra.Com
Question 308622: If n is a positive integer, which of the following cannot be the units digit of 7^n?
a) 1 b) 3 c) 5 d) 7 e) 9
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
c) 5
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