# Recursion:  Sum
by Matt
tags: recursion, math, numbers, language_fundamentals

## Summary
> Write a function that finds the sum of the first n natural numbers. Make your function recursive.
> Examples
> sum(5) ➞ 15
> // 1 + 2 + 3 + 4 + 5 = 15
> sum(1) ➞ 1
> sum(12) ➞ 78
> Notes
> Check the Resources tab for info on recursion.

## Instructions
Write a function that finds the sum of the first `n` natural numbers. **Make your function recursive.**

### Examples
```
sum(5) ➞ 15
// 1 + 2 + 3 + 4 + 5 = 15

sum(1) ➞ 1

sum(12) ➞ 78
```

### Notes
Check the **Resources** tab for info on recursion.