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If (S_n=2926), what is the value of (n)?
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Answer and explanation
Correct answer: (76)
(S_{76}=\frac{76\times77}{2}=2926), so (n=76). For large values, using (2S_n) makes identification easier.
Frequently asked questions
What is the correct answer to this question?
(76)
Why is this the correct answer?
(S_{76}=\frac{76\times77}{2}=2926), so (n=76). For large values, using (2S_n) makes identification easier.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sum of first n natural numbers.
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