UPSC NDA II 2015 Mathematics Solved Paper

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Question : 41 of 120

Marks: +1, -0

what is the sum of n terms of the series √2+√8+√18+√32+....?

[NDA II 2015]

n(n−1)
2
√2n(n+1)
n(n+1)
√2
n(n−1)
2

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