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The variance of the first 50 even natura...

The variance of the first 50 even natural numbers is

A

`(833)/(4)`

B

833

C

437

D

`(437)/(4)`

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The correct Answer is:
B
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Statement - I : The variance of first n even natural numbers is (n^(2) - 1)/(4) Statement - II : The sum of first n natural numbers is (n(n+1))/(2) and the sum of the squares of first n natural numbers is (n(n+1)(2n+1))/(6)

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