How to Use Permutations and Combinations 

Learn how to use Permutations and Combinations in this free math video tutorial by Mario's Math Tutoring. We discuss the formulas and how to use them to solve some example problems.
0:15 What is a Permutation
0:24 Formula for Permutations nPr
0:44 Formula for Combinations nCr
1:05 Introductory Example Choosing Marbles Showing the Difference Between Permutations and Combinations
3:35 Example 1 How Many Ways to Arrange 5 Books on a Shelf
4:40 Explaining What 0! Equals
5:03 Example 2 How Many Ways to Pick 2 Co-Captains
6:25 Example 3 In a 50 Person Race How Many Ways Can You Award Gold, Silver, & Bronze?
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