Question

The A.M. of the first ten odd numbers is

• A. $10$
• B. $100$
• C. $1000$
• D. $1$

Answer 1

The correct option is A $10$

First ten odd numbers are $1,3,5,7,9,11,13,15,17,19$ respectively.
$A.M.\left(\overline{x}\right)=\frac{\text{sum of all the terms}}{\text{total number of terms}}$

$A.M.\left(\overline{x}\right)=\frac{1+3+5+7+9+11+13+15+17+19}{10}$

$=\frac{100}{10}$

$=10$

$\therefore$ the $A.M$ of first ten odd numbers is $10$