Question

You have checked out b books from the library, where b is a number greater than 5. You plan to read three of the books and return them at the end of this week. In how many ways can you pick the books you will read first, second, and third? @ilikephysics2

Answer 1

If you take the following numbers of books out of the library, you could read them in the shown orders.
3 books: 1,2,3. 1,3,2. 2,1,3. 2,3,1. 3,1,2. 3,2,1. 6 ways.
4 books: 1,2,3. 1,2,4. 1,3,2. 1,3,4. 1,4,2. 1,4,3. 2,1,3. 2,1,4. 2,3,1. 2,3,4. 2,4,1. 2,4,3.
3,1,2. 3,1,4. 3,2,1. 3,2,4. 3,4,1. 3,4,2. 4,1,2. 4,1,3. 4,2,1. 4,2,3. 4,3,1. 4,3,2.

24 ways.

Answer 2

get it?

Answer 3

no i dont get it here are choices
A. b3 ways
B. (b3 - 3b2 + 2b) ways
C. (b3 - 9b3 + 27b - 27) ways
D. (5b - 3) ways

Answer 4

I would say D...I took this class in 7th grade , 5 years ago just try D

Answer 5

okay

Answer 6

Either D or A, I would go with D from what I remember