In an A.P. first two terms are -3, 4 then 21st term is . . .

Choose the correct alternative answer.

(A) −143 (B) 143 (C) 137 (D) 17

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

1 answer

Answer: (C) 137

\(d = 4 - (-3) = 7\); \(t_{21} = -3 + 20(7) = 137\).

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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