: Travis rented five movies. How many different ways can Travis select and watch the five movies if he watches?
Travis rented five movies. How many different ways can Travis select and watch the five movies if he watches a different movie each night?
Answers and Views:
Answer by Joey J
So there a five movies. The first night, he has 5 options, so you start with 5.
5.
The second night, he has only four because he has to watch a different movie. Multiply 5 by 4.
5*4
20
The third night he has 3 choices. Multiply 20 by 3.
20*3
60
The fourth night he has 2 choices. Multiply 60 by 2.
60*2
120
The fifth night he has only 1 choice. Multiply 120 by 1.
120*1
120 different ways to watch the movies.
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