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American Government Biology College Mathematics

Sets

    What are Sets?
    Union And Intersection
    Venn Diagrams
    Cartesian Product
    Answers For Set Problems

Logic

    General Logic
    Truth Tables
    Logical Operators
    Implications
    Conjunctions
    Disjunctions
    Negation
    Equivalence
    Converse and Inverse

Real Number System

    Prime Numbers
    Factors And Divisibility
    Rational Numbers

Functions and Graphs

Basic Functions
Domain And Range

Probability and Statistics

    Basic Statistics
    Counting and Permutations
    Statistical Events
    Conditional Probability
    Mean and Median
    Standard Deviation

Additional Topics

    Complex Numbers
    Logs And Exponents
    Algebra And Geometry
    Area of Plane Figures
    Properties Of Shapes
    Pythagorean Theorem
    Parallel Perpendicular

Terms And Resources

Math Terms

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What are Sets?

A set is simply a collection of things that have something in common. The alphabet is actually set consisting of all the letters from A to Z. In math terms a set is made up of numbers. So a set could be all the odd numbers between 1 and 10.

Usually when you write out sets they are shown as following. Taking our example of all the odd number between 1 and 10 we would write this as: S={1,3,5,7,9} where S just stands for set, and the brackets contain the set itself. Also note that S can be anything so in the previous example it could have been E={1,3,5,7,9}. The numbers within the brackets are called elements. So in this example 1,3,5,7,9 are elements of S.

There is also a special way to write The symbol for elements is∈∉ so you could say 3 ∈ S. If a number is not in the set you put a line through the is in symble, such as 2 ? S .

Sample Problems

Write Out the set for : A={Even Whole Numbers Between 1 and 11}

Is 6 ∈A?

Is 8 ∉ A?

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