# The mean of first ten odd natural numbers is

33 views

closed

The mean of first ten odd natural numbers is

A) 19

B) 10

C) 20

D) 5

+1 vote
by (56.9k points)
selected by

Correct option is (B) 10

First 10 odd natural numbers are 1, 3, 5, ......., 19.

$\therefore$ Mean of first ten odd natural numbers $=\frac{1+3+5+....+19\,(odd)}{10}$

$=\frac{(1+19)+(3+17)+(5+15)+(7+13)+(9+11)}{10}$

$=\frac{5\times20}{10}$ = 10

Hence, the mean of first ten odd natural numbers is 10.

+1 vote
by (42.4k points)

Correct option is  B) 10