Question

Select the perfect square.
23 x 23
924 x 429
18 x 19

Answer 1

23 × 23

Reasoning:

A prefect square is a number times itself

The product of the perfect square can therefore be a sqaure root

23 × 23= 529

Then if we square root 529 it would always be a whole number (23)

Answer 2

23x23 because the sides will be even