Question

What numbers are perfect squares and which numbers are not? Why? 16, 20, 25, 100, 125, 144, 225, 10,000

Answer 1

16, 25, 100, 144, 225, 10000 are perfect squares the rest are not. These are perfect squares because they can be multiplied by the same number and it'll equal it. For example 5×5=25 however there's no number that can be mutied by itself and equal 125.