Question

How to find the average of the first 40 natural numbers?

Answer 1

first you have to find the sum of first 40 natural no.
By the formula
Sn=n/2*(2a+(n-1)d
here n=40.
a=first natural no
d=difference between the two natural number.
after finding the sum you have to divide it by 40.
you will get your answer.