Discussion Forum



1)

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers ?


A) 2

B) 5

C) 8

D) Cannot be determined

E) None of these

Answer:

Option C

Explanation:

Let the number be x,x+2,x+4,x+6 and x+8
then $\frac{x+(x+2)+(x+4)+(x+6)+(x+8)}{5}=61$
5x+20=805
x=57
So required difference = (57+8)-57=8