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The weighted means of of first n natural...

The weighted means of of first n natural numbers whose weights are equal to the squares of corresponding numbers is

A

`(n+1)/2`

B

`(3n(n+1))/(2(2n+1))`

C

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

D

`(n(n+1))/2`

Text Solution

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The correct Answer is:
B
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