The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number-pairs EXCEPT one. Find that odd number-pair.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 16: 8.
1: 16: 8 → 42 = 16, 4 + 3 = 7, This does not follow the logic.
2. 4: 5 → 22 = 4, 2 + 3 = 5
3. 9: 6 → 32 = 9, 3 + 3 = 6
4. 36: 9 → 62 = 36, 6 + 3 = 9