Question

Select the related number from the given alternatives.

9 : 36 :: 25 : ?

1. 144
2. 49
3. 100
4. 81

Answer 1

Correct Answer - Option 3 : 100

The pattern followed here is:

Logic : second number is square of double of square root of first number.

√9 = 3 ;

(3 × 2)² = 6

6² = 36

Similarly,

√25 = 5 ;

(5 × 2)² = 10²

10² = 100

Hence, ‘100’ is the correct answer.