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At which (n) will (S_n) first become greater than (7000)?
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Answer and explanation
Correct answer: (118)
(S_{117}=6903) and (S_{118}=7021), so it first exceeds (7000) at (n=118). In boundary questions, check two nearby values.
Frequently asked questions
What is the correct answer to this question?
(118)
Why is this the correct answer?
(S_{117}=6903) and (S_{118}=7021), so it first exceeds (7000) at (n=118). In boundary questions, check two nearby values.
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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