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If (S_n=465), what is the value of (n) for the first (n) natural numbers?
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Answer and explanation
Correct answer: (30)
(S_{30}=\frac{30\times31}{2}=465), so (n=30). Substituting options in the formula can give a quick answer.
Frequently asked questions
What is the correct answer to this question?
(30)
Why is this the correct answer?
(S_{30}=\frac{30\times31}{2}=465), so (n=30). Substituting options in the formula can give a quick answer.
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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