Math Probability and statistics Probability and combinatorics Permutations 6 videos 1 skill You want to display your Chuck Norris dolls on your desk at school and there is only room for five of them. Unfortunately, you own 50. How many ways can you pick the dolls and arrange them on your desk? 9:01 Factorial and counting seat arrangements VIDEO 9:01 minutes 7:35 Permutation formula VIDEO 7:35 minutes 5:39 Possible three letter words VIDEO 5:39 minutes 4:50 Zero factorial or 0! VIDEO 4:50 minutes 3:45 Example: Ways to arrange colors VIDEO 3:45 minutes Thinking about how many ways you can pick four colors from a group of 6 2:19 Example: Ways to pick officers VIDEO 2:19 minutes How many ways can we pick officers for our organization? Permutations PRACTICE PROBLEMS Introductory permutation problems.