Question

please solve this question and please give reason

Answer 1

107^90 - 76^90

 the power is same and both are even.

It’ll always be divisible by (a-b) and (a+b)

So, 107 - 76 = 31 and 107 + 76 = 183

Now, 183 is divisible by 61.

 answer

1. 61.