## CLEP Guides

American Government Biology College Mathematics General CLEP General Tips Human Growth And Development Humanities Introductory Psychology Principles Of Marketing Sociology US History 1 US History 2# Truth Tables

Remembering the previous example of âIf it is raining then I wear my raincoatâ where

A = It Is raining

B = I wear my raincoat

The meaning column would usually not be in the table and is put there so you understand what each line means.

A | B | Meaning |
---|---|---|

T | T | it is raining and Iâm wearing my raincoat |

T | F | it is raining and I am not wearing my raincoat |

F | T | it is not raining and I am wearing my raincoat |

F | F | it is not raining and I am not wearing my raincoat |

Now these are all the POSSIBLE solutions but these are not all logical truths. This will make more sense in the following pages as we go over the operators and start adding columns to our truth tables.

Whenever you have a logic problem involving 2 variables the first step you should do is draw the first 2 columns of the above table. As we go through the logical operations we will be using truth tables to express how you can visualize arguments. If you can master truth tables then you will have no problem figuring out all the logic problems on the CLEP math exam.