Question

How many ways can you choose 3 out of 5 books if order doesn't matter

Answer 1

Since order doesn't matter, we can simply use the combination notation cited as:

`^(n)C_r`, where n represents the number of objects and r represents the number of subsets.

If we were to choose 3 books from a pack of 5, we can choose them in
`^(5)C_3` ways, which is 10 ways.