Question

4^61 + 4^62 +4^63 +4^64 +4^65 is divisible by

Answer 1

4^61

Answer 2

because \(4^{65}=4^{61+4} = 4^{61}\times 4^4\). do the same with the few other numbers and you see clearly that \(4^{61}\) is a common factor.

Answer 3

4^61 + 4^62 +4^63 +4^64 +4^65
=4^61 (1+4+16+64+256)
=4^61 *341 = 4^61*11*31
so its divisible by all these 3
4^61,11,31

Answer 4

oh wow...when she first posted it there were no ^'s ..sorry