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)
b.45!
2 answers:
The order of the 3 books does not matter so its the number of combinations of 3 from 45
b is the correct choice
Answer: b.C(45, 3)
Step-by-step explanation:
Given: Debbie is borrowing 3 books from her friend who has a collection of 45 books.
Therefore, the number of ways Debbie can choose a group of 3 books will be equal to the number of combinations of selecting 3 books from 45 books.
i.e. The number of ways Debbie can choose a group of 3 books=
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