Debbie is borrowing 3 books from her friend who has a collection of 45 books. Which of the following expressions represents the

Question

3 years ago

13

number of ways Debbie can choose a group of 3 books?
a.P(45, 3)
b.C(45, 3)
b.45!

2 answers:

choli [55] · Answer 1 · 2022-07-06T23:45:22+03:00

choli [55]3 years ago

6 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

olya-2409 [2.1K] · Answer 2 · 2022-07-07T01:36:49+03:00

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= $C(45, 3)$