Which of the following numbers are perfect squares?

256

Given a number 256 and need to find out whether it is perfect square or not.

Now, we have the perfect square = , where m and n are integers

⇒ 256 is a perfect square as it can be

expressed as 16 × 16 form the product of two equal integer.

⇒ 256 = 16 × 16

Hence, 256 is a perfect square.