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Question

Which number does not belong?
2, 6, 18, 54, 162, 325

This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is

325

Each term is obtained by multiplying the previous term by 3, giving the sequence 2, 6, 18, 54, 162, 486. The value 325 breaks this multiply-by-3 pattern, so it is the number that does not belong to the series.

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