Average of First 40 Natural Number is ;

  1. 30.5
  2. 20
  3. 20.5
  4. 31
Monis Rasool Professor Asked on 2nd June 2015 in Maths.
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1 Answer(s)

Answer: (3) 20.5
Explanation:-

Sum of natural number is = n(n + 1)/2
where, n = number of natural numbers
Sum of 40 natural number = 40(40 + 1)/2
= 40 x 41/2
= 820
The average of 40 natural numbers = 820/40
= 20.5

Hence, the average of 40 natural numbers is 20.5

Anurag Mishra Professor Answered on 2nd June 2015.
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