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SSC GD Classification question with solution

ClassificationEasySSC GD 2024

Three of the following four numbers are alike in a certain way and one is different. Select the odd one out.

  1. (A)23
  2. (B)21
  3. (C)11
  4. (D)13

Correct answer: (B) 21

Each of 13, 11, 23 is a prime number, whereas 21 is not a prime number. Therefore 21 does not belong to the group and is the odd one out.

About this question

Subject
General Intelligence and Reasoning
Topic
Classification
Exam
SSC GD 2024
Attempts on SSC Rank
Not attempted yet

Appears in: SSC GD 2024 Computer Based Examination Question Paper — 20 February, Shift 1

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Last reviewed on 5 Oct 2026. Spotted a mistake? See our correction policy.