Question

A=m{2} + n{2} with m and n both being odd numbers.

We need to find out of this integer is divisible by 2,4 or 6. I don't know how to start solving this.

Square of any odd number will have an odd number in the units place, and the sum of two odd numbers will yield an even number in the units place.

So the result will have an even number at the units place and will definitely e divisible by 2.

How to find out about 4 and 6?

Answer 1

if the number is divisible by both 2 and 3 then its divisible by 6