The Sum of first n Natural Number is?

Answer: The sum of first n natural numbers is given by:

S=n(n+1)2

For example:

Question: Find the sum of natural numbers till 320.

It is given that:

n=320

By applying the formula, we get

S=n(n+1)2

S=320(320+1)2

S=3203212

S=51,360

Hence, sum of natural numbers till 320 is 51,360.