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10 April, 19:56

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!

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Answers (1)
  1. 10 April, 20:36
    0
    The order of the 3 books does not matter so its the number of combinations of 3 from 45

    b is the correct choice
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