Question

if m,n are natural numbers for what values of m, does 2n×5m each in 5​

Answer 1

Step-by-step explanation:

2n x 5m

2n is always even for all values of n.

5m is always odd and ends with 5 for all values of m. But 2n x 5m is always even and ends in 0.

∴ 2n x 5m cannot end with the digit 5 for any values of m. No value of m will satisfy 2n x 5m ends in 5.