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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?
Sal explains a tricky factorial problem about counting seat arrangements.
Sal explains the permutation formula and how to use it.
Sal explains how to find all of the possible three letter words when we can use each letter as many times as we want, and when each letter can only be used once.
Sal explains the intuition behind zero factorial.
Thinking about how many ways you can pick four colors from a group of 6
How many ways can we pick officers for our organization?
Introductory permutation problems.