Probability and statistics

Question

How many different ways can four types of laser printers be displayed on a shelf in a computer store?

There are [ ]different ways to display the four types of laser printers on a shelf

Answer 1

How many different ways can four types of laser printers be displayed on a shelf in a computer store?

There are [24 ]different ways to display the four types of laser printers on a shelf.

Answer: 4! = 4 x 3 x 2 x 1 =FACT(4) = 24