The average of the first 30 natural numbers is:

Correct option is C

​Given:

First 30 natural numbers.

Formula Used:

​$$\text{Average} = \frac{\text{Sum of numbers}}{\text{Count of numbers}}$$​

​$$\text{Sum of first $ n $ natural numbers} = \frac{n(n+1)}{2}$$​​

Solution: ​

Now, 

​$$\text{Sum} = \frac{30 \times (30 + 1)}{2} = \frac{30 \times 31}{2} = 465$$ 

Thus , 

​$$\text{Average} = \frac{465}{30} = 15.5$$​​