AP EAPCET 24-Aug-2021 Shift 1 Paper

Section: Mathematics

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Question : 35 of 160

Marks: +1, -0

The mean of the squares of first ' n ' natural numbers is

[
n(n+1)
2
]2
2n2−3n+1
6
2n2+3n+1
6
n(n+1)(2n+1)
6

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