Question
In the following question, select the odd pair of
numbers from the given alternatives.Solution
The logic followed here is: (First number – 2)² = Second number 15 : 144 = (15 – 2)² = 13² = 169 ≠144 21 : 361 = (21 – 2)² = 19²  = 361 18 : 256 = (18 – 2)² = 16²  = 256 29 : 729 = (29 – 2)² = 27²  = 729 Thus, the odd pair is 15 : 144. Hence, the correct answer is (A).
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