Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number pair that is different.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 30: 908.
The logic used here is:
(1st number)2 + 6 = 2nd number
Option 1: 22: 490
(22)2 + 6 = 484 + 6 = 490
Option 2: 25: 631
(25)2 + 6 = 625 + 6 = 631
Option 3: 21: 447
(21)2 + 6 = 441 + 6 = 447
Option 4: 30: 908
(30)2 + 6 = 900 + 6 = 906
This does not follow the logic.
Hence, option 4 is the odd one out.