The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number-pairs except one. Find that odd number-pair.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 8 : 29.
Option 1: 2 : 9 ⇒ (2 × 3) + 3 = 9
Option 2: 6 : 21 ⇒ (6 × 3) + 3 = 21
Option 3: 10 : 33 ⇒ (10 × 3) + 3 = 33
Option 4: 8 : 29 ⇒ (8 × 3) + 3 = 27 ≠ 29