Question

Roger is renting a tuxedo for prom. Once he has chosen his jacket, he must choose from three types of pants, four colors of vests, and two different styles of shoes. How many different ways can he select his attire for the prom?

Answer 1

The easiest way to solve it is to multiply all the choices together. 

3 pants x 4 vests x 2 shoes = 24 different ways

if your unsure of your answer, you can always draw a tree diagram.