Discussion Forum



1)

The average of all odd numbers upto 100 is :


A) 49

B) 49.5

C) 50

D) 51

Answer:

Option C

Explanation:

Sum odf odd numbers upto 100 = 1+3+5+7+....+95+97+9
=(1+99)+(3+97)+(5+95)+.....+upto 25 pairs
= 100+100+100+...+(25 times)=2500
Avergae = 2500/50=50