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Question

The sum of square of the first n natural numbers is given by _________

a.

n(n+1)(2n+1)/6

b.

n(n-1)/2(2n+1)

c.

n²(n+1)(2n+1)/6

d.

None of the mentioned

Answer: (a).n(n+1)(2n+1)/6

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Q. The sum of square of the first n natural numbers is given by _________

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