Four pair of numbers are given, out of which three are same in a certain way. Find the odd pair that does not belong to the group?
Answer & explanation
Correct answer: option 4
12 + 13 = 25 = (5)2 , 12 + 24 = 36 = (6)2
23 + 26 = 49 = (7)2 , 20 + 14 = 61 ≠ (9)2