Question

Choose the odd pair out from the given alternatives.
1. 36, 3, 2
2. 225, 3, 5
3. 657, 6, 4
4. 324, 2, 9

Answer 1

Correct Answer - Option 3 : 657, 6, 4

The logic follows here is :-

'First number = (second number × third number)2

By observing the given options :

1) 36, 3, 2 → 3 × 2 = 6 → 6² = 36 → 36 = 36

2) 225, 3, 5 → 3 × 5 = 15 → 15² = 225 → 225 = 225

3) 657, 6, 4 → 6 × 4 = 24 → 24² = 576 → 657 ≠ 576

4) 324, 2, 9 → 2 × 9 = 18 → 18² = 324 → 324 = 324

Thus, the odd one is '657, 6, 4'.