Find the wrong number in the following series.1, 3, 7, 15, 32, 63

A. 15

B. 7

C. 63

D. 32

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cgl Save WhatsApp Report

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Best answer

Answer: D. 32

Answer: (D) 32

Rule: ×2 + 1 (or \(2^n - 1\)): 1, 3, 7, 15, 31, 63.

The term 32 should be 15 × 2 + 1 = 31, so 32 is wrong.

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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