What is the Arithmetic Mean of the First n Natural Number?

  1. (n+1)/2
  2. n(n+1)/2
  3. 2(n+1)
  4. n²(n+1)/2
Monis Rasool Professor Asked on 23rd August 2015 in Maths.
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1 Answer(s)

Answer:  (1) (n + 1)/2

Explanation:-
The sum of first n natural number = n (n + 1)/2
Then, the average of n natural number = n (n + 1)/n 2
= (n + 1) / 2

Then, the average of n natural number is (n + 1) / 2

Hence, the answer is (1) n (n + 1)/2.

Anurag Mishra Professor Answered on 24th August 2015.
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