Question

What is the arithmetic mean of first 20 odd natural numbers?

Answer 1

Formula –

The sum of first n odd numbers = n2

Then, the sum of 20 odd numbers = (20)2

= 20 x 20

= 400

Then, the average of first 20 odd numbers = 400/20

= 20

Hope so this will help you

Answer 2

Answer:

the arithmetic mean of first 20 odd natural no. = 20