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Class 9MathematicsSequences and ProgressionsSum of first n natural numbersMediumLevel 60
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If (1+2+3+\cdots+n=595), what is (n)?

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Answer and explanation

Correct answer: (34)

(S_{34}=\frac{34\times35}{2}=595), so (n=34). Match the given sum with nearby triangular numbers.

Related tags

MathSequencesNatural-NumbersSum

Frequently asked questions

What is the correct answer to this question?

(34)

Why is this the correct answer?

(S_{34}=\frac{34\times35}{2}=595), so (n=34). Match the given sum with nearby triangular numbers.

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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