The Average of First 40 Natural Number is:

  1. 20
  2.  20.5
  3.  40
  4.  40.5
vijay Professor Asked on 2nd August 2015 in Maths.
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  • 1 Answer(s)

    Answer: (2) 20.5
    Explanation:-
    Formula-

    The sum of natural number = n (n + 1)/2
    Where, n – number of natural number.
    Then, the sum of first 40 natural number = 40 (40 + 1)/2
    = 20 x 4 1
    = 820
    Now, the average of 40 natural number = 820/40
    =  20.5
    Hence, the answer is (2) 20.5.

    Anurag Mishra Professor Answered on 2nd August 2015.
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