Answer
True
Work Step by Step
Some implications are not tautologies, for example pāq is not a tautology because it can be false, if p is true and q is false.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 3 - Logic - 3.4 Truth Tables for the Conditional and the Biconditional - Concept and Vocabulary Check - Page 159: 5
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