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. 186 : 7.
Logic: (Second number)2 × 4 = First number
1. 16 : 2 → 22 × 4 = 4 × 4 = 16
2. 100 : 5 → 52 × 4 = 25 × 4 = 100
3. 36 : 3 → 32 × 4 = 9 × 4 = 36
4. 186 : 7 → 72 × 4 = 49 × 4 = 196 ≠ 186