Four pairs of numbers have been given, out of which three are alike in some manner, while one is different. Choose out the odd one.
Answer & explanation
Correct answer: option 1
The logic followed here is:
7 : 50 → 72 + 1 = 50 (odd)
21 : 462 → 212 + 21 = 462
14 : 210 → 142 + 14 = 210
25 : 650 → 252 + 25 = 650