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nth Term of A.P

the sum of th...

Question

the sum of the first $25$ terms of natural numbers

325

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675

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625

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552

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Solution

The correct option is C $325$
Sum of first $25$ terms of A.P.
$S_{n} = \frac{n (n + 1)}{2}$
$= \frac{25 \times 26}{2}$
$S_{n} = 325$ .

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