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# Question 1

Let’s create a function called `sum_numbers`

as follows:

```
def sum_numbers(number_one, number_two):
return number_one + number_two
```

First, we have to use the keyword `def`

to let Python know that `sum_numbers`

is a function. We then use `()`

to define the parameters to our function, which
are in this case `number_one`

and `number_two`

.

We then need to compute a sum of `number_one`

and `number_two`

and output
that result using the keyword `return`

in front of the computed sum.

# Question 2

In order to sum four numbers, we need to add two more parameters to our original function and add them to the computed sum, as seen below:

```
def sum_numbers(number_one, number_two, number_three, number_four):
return number_one + number_two + number_three + number_four
```