CS202: Discrete Structures

2.2: Permutations

• Ordering Elements of a Set Page

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  Often it is the case that the order of things is not important. That is where permutations come in. It enables us to show how many different arrangements can be had of a given set of elements. Of course, this is not true of something like an event stream but we will discuss those later.
  

• Try It Now Book

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  Work these exercises to see how well you understand this material.