Question

A mother duck lines her 9 ducklings up behind her. In how many ways can the ducklings line up?

Answer 1

Answer:

362,880

Step-by-step explanation:

We use factorials for this equation:

9! =

9 · 8 · 7 · 6 · 5 · 4 · 3 · 2 · 1 =

362,880

Answer 2

Factorial of 9
9! = 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1

Imagine the spots of the ducklings, the beginning there are one possibility of 9 ducklings. Afterwards the possibility goes to 8 and so on...

Solution: 362,880 possibilities