SSC CGL 16 Aug 2015 Shift 1 Paper

Question : 148 of 200

Marks: +1, -0

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

Solution:

Sum of first n odd natural numbers =

n^2

(20)^2

= 400
∴ Required average =

{400}/{20}

= 20

Go to Question:

Prev Question

Next Question