Question

Which number is a perfect square ?

a. 33
b. 37
c. 48
d. 49

Answer 1

49.

Explanation:

A perfect square is a number that can be expressed as the product of two equal integers. The only way to accurately calculate if a number is a perfect square is to find the factors.

Answer 2

49

Explanation:

Because sqrt(49)=7

others are Real numbers