Introduction to Logic
by
Stefan Waner and Steven R. Costenoble

Answers to Exercises
for
Section 2: Logical Equivalence, Tautologies and Contradictions

1. Statements and Logical Operators 2. Logical Equivalence, Tautologies ... 3. The Conditional and the Biconditional Main Logic Page "Real World" Page
Return to Exercises

27. (~p)p

29. (~p)q

31. p((~p)(~q))

33. (p(~p))(pq)

35. Either I am not Julius Caesar or you are not a fool.

37. It's raining and I have forgotten either my umbrella or my hat.

39. My computer crashes when it has been on a long time, the air is not dry, and the moon is full.

41. The warning light will come on if the pressure drops and either the temperature is high, the emergency override is not activated, or the manual controls are not activated.

1. Statements and Logical Operators 2. Logical Equivalence, Tautologies ... 3. The Conditional and the Biconditional Main Logic Page "Real World" Page
Return to Exercises

We would welcome comments and suggestions for improving this resource. Mail us at:
Stefan Waner (matszw@hofstra.edu) Steven R. Costenoble (matsrc@hofstra.edu)
Last Updated: July, 1996
Copyright © 1996 StefanWaner and Steven R. Costenoble