Four number pairs have been given out of which three are alike in some manner and one is different. Select the different one.
Show answer & explanation
Correct answer: D
Explanation
Relation: Second number = (First number) ² ÷ 2
13²/2 = 169/2 = 84.5
17²/2 = 289/2 = 144.5
19²/2 = 361/2 = 180.5
23²/2 = 529/2 = 264.5 ≠ 260.5
Therefore, 23: 260.5 is the different pair.
The correct answer is option (4).