By using the **listing method**, the number of** possible uniforms **that Brilliant Spa can choose from is equal to **9 uniforms**.

<h3>What is a listing method?</h3>

In Mathematics, a **listing method** can be defined as a technique which is used to **list** all the **elements** or **members** of a **data set**, while separating each of them with a **comma** and enclosing the **data set** within **curly braces**.

From the information provided above, we have the following points:

- Polo shirts come with color yellow, red, and green.

- The pants come with color black, blue, and white.

By using the **listing method**, a **list** of all the **elements** in this **data set **is given by:

List = {(yellow, black), (yellow, blue), (yellow, white), (red, black), (red, blue), (red, white), (green, black), (green, blue), (green, white)}

**Number of possible uniforms **=** 9 uniforms**.

Read more on **listing method **here: brainly.com/question/7296468

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