Chapter 16

In This Chapter

Introducing set notation

Checking out operations on sets

Working with factorials!

Using the multiplication property to count your options

The possibilities: Using sets when computing permutations and combinations

Writing the terms of an expression using the binomial theorem

A *set* is a mathematical entity that consists of a collection or group of objects. For instance, a set named *A* may consist of the first six prime numbers. You write *A* = {2, 3, 5, 7, 11, 13}. The set notation looks a bit like the notation you use to write the terms of a sequence (see Chapter 15), but with sets, the elements don’t have to be in any particular order. You can just as easily write *A* = {3, 13, 11, 7, 5, 2}. The two sets here are the same.

In addition, sets don’t require a mathematical rule for their elements. You can ...

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