It's great that we can generate random decimal numbers, but it's even more useful if we use it to generate random whole numbers.

- Use
`Math.random()`

to generate a random decimal. - Multiply that random decimal by
`20`

. - Use another function,
`Math.floor()`

to round the number down to its nearest whole number.

Remember that `Math.random()`

can never quite return a `1`

and, because we're rounding down, it's impossible to actually get `20`

. This technique will give us a whole number between `0`

and `19`

.

Putting everything together, this is what our code looks like:

`Math.floor(Math.random() * 20);`

We are calling `Math.random()`

, multiplying the result by 20, then passing the value to `Math.floor()`

function to round the value down to the nearest whole number.

Use this technique to generate and return a random whole number between `0`

and `9`

.

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