Question

The least number by which 425 must be multiplied to make it a perfect square is

• A. 17
• B. 15
• C. 5
• D. 3

Answer 1

The correct option is A

17

425 = 5 × 5 × 17

Here, prime factor 17 does not have its pair. If 17 gets a pair, then the number will becomes a perfect square.

Thus, 425 × 17 = 5 × 5 × 17 × 17 is a perfect square.

Therefore, 17 is the least number by which 425 must be multiplied to make it a perfect square.