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Sets and Venn Diagrams

Examples of Sets. 1. Words:N is the set of natural numbers or counting numbers.2. List:N = {1, 2, 3,

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Sets and Venn Diagrams

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    1. Sets and Venn Diagrams A set is a collection of objects. There are three ways to describe a set: We can use words. We can make a list. We can use set-builder notation.

    2. Examples of Sets 1. Words: N is the set of natural numbers or counting numbers. 2. List: N = {1, 2, 3, } 3. Set-builder notation: N = {x | x ? N}

    3. Kinds of Sets A finite set has a limited number of members. Example: The set of students in our Math class. An infinite set has an unlimited number of members. Example: The set of integers. A well-defined set has a universe of objects which are allowed into consideration and any object in the universe is either an element of the set or it is not.

    4. Venn Diagrams One way to represent or visualize sets is to use Venn diagrams:

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