The average of the first $10$ odd numbers is _______.

The first $10$ consecutive odd numbers are: $1,3,5,7,9,11,13,15,17,19$.
The formula for the sum of the first $n$ odd natural numbers is:

$$\text{Sum}=n^2$$

For $n=10$:

$$\text{Sum}=10^2=100$$

The average is calculated as:

$$\text{Average}=\frac{\text{Sum}}{n}=\frac{100}{10}=10$$

Standard Property: The average of the first $n$ consecutive odd natural numbers is always equal to $n$.