Teacher/User Name: DEMO Name:__________________________
Practice Problems Period: ________ Date: ____________

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All rights reserved. Copyright 1998 Triple Threat Inc.


1) Write a counterexample:
The team plays on Friday given that it is 1:00 pm.

2) Write a counterexample:
Charlie did not wake up early assuming that the project is not due Sunday.
3) Write a counterexample:
Karl has a red hat assuming that the cat is white.

4) Write a counterexample:
Wendy went to the store if Harry was not playing games.
5) Write a counterexample:
Dever went out Sunday night given that Darnell has a red hat.

6) Write a counterexample:
If Adrian goes to the store then the team plays on Tuesday.
7) Write a counterexample:
If the team plays on Tuesday then the project is due Wednesday.

8) Write a counterexample:
Pepper does homework after dinner given that Tulip is not married.
9) Write a counterexample:
Apples are not on sale if yesterday was Friday.

10) Write a counterexample:
The pen is blue assuming that today is not Tuesday.

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