combinations and probability

Question

There are eight online songs that you would like to download, but you only have enough money for three. How many different groups of songs can you buy

Answer 1

₈C₃ -- the binomial coefficient of 3 things chosen from 8.

Answer 2

This is a Combination. We have 8 and we need to choose 3. The total number of combinations would be 8! Divided by (3! × (8 - 3!) Which equals 6 × 7 × 8 all divided by 1 × 2 × 3. Which equals 56. There would be 56 ways to choose 3 songs out of a total of 8. I hope this helps. You need help please don't hesitate to reach out