Question

kamal just got a cell phone and is excited to customize it. there are 2 different ringtones and 9 different wallpapers available on the phone. the cell phone store carries 7 different cell phone cases. kamal also wants to get one of the 4 cell phone charms available in the store. how many different ways can kamal customize the cell phone?

Explanation:

Step1: Apply multiplication principle

The number of ways to choose a ringtone is 2, a wallpaper is 9, a cell - phone case is 7 and a charm is 4.

Step2: Calculate total ways

The total number of ways to customize the phone is \(2\times9\times7\times4=504\).

Answer:

504