How many numbers from 1 to 500 are divisible by 3 or 7?

A. 237

B. 215

C. 213

D. 214

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

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Answer: D. 214

Answer: (D) 214

Divisible by 3: ⌊500/3⌋ = 166. By 7: ⌊500/7⌋ = 71. By both (21): ⌊500/21⌋ = 23.

By 3 or 7 = 166 + 71 − 23 = 214.

Trap: 237 forgets to subtract the numbers counted twice.

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

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