[5050] Find the sum of first 100 natural numbers.

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Aptitude

TNPSC G4

10th CBSE Maths

Find the sum of first 100 natural numbers.

4550

5050

6050

6550

Explanation:

Sum of first n natural numbers = $\dfrac{n × (n + 1)}{2}$
Sum of first 25 natural numbers = $\dfrac{100 × (100 + 1)}{2}$
= $\dfrac{100 × 101}{2}$
= 50 × 101
= 5050

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