The ratio of squares of first n natural numbers to square of sum of first n natural numbers is17:325. The value of n is:

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Solution

The correct option is B
25

Sum of squares of first n natural numbers= $\frac{n (n + 1) (2 n + 1)}{6}$

Sum of first n natural numbers = $\frac{n (n + 1)}{2}$

So solving the given equation we will get n=25

Suggest Corrections

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