TS ICET 23 May 2019 Shift 1 Paper

Question : 141 of 200

Marks: +1, -0

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

Solution:

Mean

=\;{n(n+1)(2 n+1)}/{6 n}=\;{2 n^{2}+3 n+1}/{6}

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