If m and n are positive integers, then the digit in the unit's place of 5 n 5^n 5 n + 6 m 6^m 6 m is always

Placements Easy Number System MCQ

Question

If m and n are positive integers, then the digit in
the unit's place of $5^n$ + $6^m$ is always

Options

A.

5

B.

6

C.

1

D.

n+m

unit digitpowers

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