4**2 = 16

I thought this was the most simplest thing to do but it says syntax error

# My math calculation wont allow me to pass. WHY?

**mtf**#2

The thing is to let the computer do the computation:

`4 ** 2`

is an expression that will yield the value, 16. We could write it as a statement,

`puts 4 ** 2 # 16`

or assign it to a variable,

```
four_squared = 4 ** 2
puts four_squared # 16
```