If n and m both are positive integers what is the remainder when 3(to the power 4n+2) +m is divided by 10?
1. N =2
2. M = 1
1. N =2
2. M = 1
3^(4n+2)=9*(81^n)
when this is divided by 10 reminder will be (-1)(1^n)=-1
so when we divide 3^(4n+2)+m by 10 reminder is m-1
From 1...
N=2..no information about m hence not sufficient
From2
m=1..so reminder is 1-1=0...sufficient
Ans option B
