Hi,

Is there a simple explanation for this?

The positive integer is not divisible by . The remainder when is divided by 7 and the remainder when is divided by are each equal to . What is ?

A. 1

B. 2

C. 4

D. 6

E. It cannot be determined from the information given.

I just looked at the middle part and concluded the answer to be 1. The only numbers I know that are equal to their squares are 0 and 1. Zero isn't available.