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Debbie is borrowing 3 books from her friend who has a collection of 45 books. Which of the following expressions represents the number of ways Debbie can choose a group of 3 books?

A.) P(45, 3)
B) C(45, 3)
C) 45!

User GunnerFan
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2 Answers

5 votes

Answer:

C(45, 3)

Explanation:

User Sergey Mell
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As we observe clearly the problem given, it is clear that the order in which Debbie would choose the 3 books out of the total of 45 books is not important. This makes the problem an example of a Combination problem. The answer to this item is therefore letter B. C(45,3) read as combination of 45 taken 3.
User Drewhannay
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