Which of the following perfect squares are squares of even numbers? (a)324 (b) 84 (c) 1369 (d)1444

Explanation

For a number to be a perfect square of an even number, its unit digit should be even.

In the given options, `841` and `1369` can not be correct options as their unit digit is odd.

Unit digit of `324` is even. So, it correct and it is a perfect square of `18`.

Unit digit of `1444` is even. So, it correct and it is a perfect square of `38`.