Did you know that a combination lock should have been called a permutation lock? In this micro course, learn how to know when to use a combination or a permutation when looking at word problem applications of each.

• Using Combinations and Permutations in the World Outside of a Math Class - Online Video
• Using Combinations and Permutations in the World Outside of a Math Class - Practice Problems
• Using Combinations and Permutations in the World Outside of a Math Class - Solutions