The least number that must be subtracted from 63522 to make the result a perfect square is = ?

A. 18

B. 20

C. 24

D. 30

Answer: Option A

Solution(By Examveda Team)

According to the question,
As we know that the square of 252 is which that is near to the value of 63522.
∴ 63522 - x = 63504
⇒ x = 18