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  9. Q28

WBCS 2024 · Question 28 of 196

Find the odd number out:

Reasoning

  1. A24
  2. B36Correct
  3. C72
  4. D168

Answer: B. 36

Explanation

Official WBPSC key (Series A): (B) 36. 24, 72, and 168 are pronic numbers (n × (n+1)): 4×6, 8×9, and 12×14 are not exact consecutive? More appropriately, 24, 72, and 168 are divisible by 24, whereas 36 is not.

Source: WBCS (Exe) etc. (Prelim) 2024, Series A

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