Mrs. reid is going on a trip. she has 9 books that she hasn't read yet, but she wants to bring only 3 on the trip. in how many ways can she choose 3 books to bring on the trip? ♦27 ♦84 ♦504 ♦60,480

Option B is right.

Step-by-step explanation:

Given that there are totally 9 books unread by Mrs. Reid.  OUt of these she wants to take only 3 books on the trip.

For books order does not count.

Hence combinations would be appropriate to calculate.

3 books out of 9 can be selected in

9C 3 ways

No of ways of selecting 3 books for the trip out of 9 =

There are just 84 ways of choosing 3 books to bring on the trip out of 9 unread books.

Option B is right.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.