TS EAMCET 2017 Code A Solved Paper

Section: Mathematics

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Question : 66 of 160

Marks: +1, -0

For any integer n≥1,

n

Σ

k=1

k(k+2)=

n(n+1)(n−2)
6
n(n+1)(2n+7)
6
n(n+1)(2n+1)
6
n(n−1)(2n+8)
6

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