The sum of the first 20 natural numbers is
A. \(200\)
B. \(420\)
C. \(190\)
D. \(210\)
1 answer
Best answer
Answer: D. \(210\)
\(S_n = \frac{n(n+1)}{2} = \frac{20 \times 21}{2} = 210\).
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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