Select the number that will come in place of the question mark (?) in the following series.1, 2, 6, 21, 88, ?

A. 440

B. 445

C. 456

D. 443

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

1 answer

Best answer

Answer: B. 445

Answer: (B) 445

Pattern: \(\times 1 + 1, \times 2 + 2, \times 3 + 3, \times 4 + 4\): 1\(\to\)2\(\to\)6\(\to\)21\(\to\)88. Next: \(88 \times 5 + 5 = 445\).

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

Was this answer helpful?