In how many ways can the numbers 1, 2, 3, and 4 be ordered?

4

12

16

24

24

Step-by-step explanation:

You can choose 4 numbers for the first place. Then you have 3 numbers left for the second place. Now you have 2 numbers left for the third place. Finally, there is only 1 number left for the 4th place. We use the counting principle.

4 * 3 * 2 * 1 = 24