Find out the average of first 15 odd numbers

 

  1. 18
  2.  14
  3.   20
  4.   15

 

mohitverma Default Asked on 28th July 2015 in Maths.
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1 Answer(s)

Answer: (4) 15
Explanation:-
The first  15 odd numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29,
The sum of odd numbers = (n )2
Where, n – number the odd numbers.Then, Sum of first 15 odd numbers = (15)2
= (15)2
= 225

Then, the average of first 15 odd numbers = 225/15
= 15
Hence, the answer is (4) 15.

Anurag Mishra Professor Answered on 28th July 2015.
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