The smallest whole number that is to be multiplied with 59535 to make a perfect square number is x. The sum of digits of that number is?

A. 6

B. 5

C. 7

D. 9

Answer: Option A

Solution(By Examveda Team)

$$59535 = 3 \times 5 \times \boxed{3 \times 3} \times \boxed{3 \times 3} \times 7 \times 7$$
⇒ To make a perfect square we should multiply by = 3 × 5 = 15
x = 15 [given]
⇒ Sum of digits of number = 1 + 5 = 6