The first number in the given number pairs is obtained by performing certain mathematical operation(s) on the second 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: C
Explanation
The correct answer is option 3 i.e. 15 : 9.
The logic used here is: 2nd number × 2 - 2 = 1st number
Option 1: 20 : 11 11 × 2 - 2 = 22 - 2 = 20 This follows the logic.
Option 3: 15 : 9 9 × 2 - 2 = 18 - 2 = 16 This does not follow the logic.