Three of the following four number-pairs are alike in a certain way and one is different. Find the odd one out.
Answer & explanation
Correct answer: option 4
The logic followed here Is :
(Ist number)2 - ist number = second number
18 : 306 = 182 + 18 = 306
63 : 3906 = 632 - 63 = 3906
15 : 210 = 152 - 15 = 210
37 : 1331 = 372 - 37 = 1332 ≠ 1331