Question

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

4	7	6
15	?	21
44	68	60

1. 19
2. 20
3. 18
4. 24

Answer 1

Correct Answer - Option 4 : 24

The logic is:

Column 1: (15 - 4) × 4 = 11 × 4 = 44

Column 3: (21 - 6) × 4 = 15 × 4 = 60

Similarly,

Let the missing number be a

Column 2: (a - 7) × 4 = 68

⇒ a - 7 = 68 ÷ 4

⇒ a - 7 = 17

⇒ a = 17 + 7

⇒ a = 24

Hence, ‘24’ is the correct answer.