Question

Calculate the average of first 40 natural numbers.

Answer 1

Answer:

sum of arithmetic progression 1,2,3,4,..........,39,40 = n÷2(2a+(n-1)d)

Answer 2

Answer:

Explanation:

So,sum of 40 natural nos=(40×41)2= 820. Therefore the required average=820/40=20.5.