Discrete Mathematics and Its Applications, Seventh Edition

Published by McGraw-Hill Education
ISBN 10: 0073383090
ISBN 13: 978-0-07338-309-5

Chapter 1 - Section 1.3 - Propositional Equivalences - Exercises - Page 36: 59

Answer

9

Work Step by Step

The truth values are determined for every disjunction in the following truth table (and the last column describes the number of true disjunctions in the row). In the table we notice that it is possible for all 9 of the disjunctions to become true.
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