**Find the average of the first 40 natural numbers.**

### Note

**Sum of first n natural numbers = [{n(n+1)}/2]**

**So, sum of first 40 natural numbers = (40×41)/2 = 820**

**∴ Required average = (20/40) = 20.5**

**Sum of first n natural numbers = [{n(n+1)}/2]**

**So, sum of first 40 natural numbers = (40×41)/2 = 820**

**∴ Required average = (20/40) = 20.5**