Question

do with proper solution

check whether 5^(n) - 1 is divisible by 4 for n=1

Answer 1

can u help me fast !!!!!!!!!!!!!!!!!!!!!!

Answer 2

Hi friend,

5^n-1 is divisible by 4 for n=1,

PROOF;-
Substitute n value in given,
5¹-1
=5-1
=4 is divisible by 4.
So,5^n-1 is divisible by 4 for n=1

Hope it helps