Answer
$P(A)+P(B)-P(\text{A and B})$.
Work Step by Step
From what we learned in this chapter, in this case $P(\text{A or B})=P(A)+P(B)-P(\text{A and B})$.
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 11 - Counting Methods and Probability Theory - 11.6 Events Involving Not and Or; Odds - Concept and Vocabulary Check - Page 733: 3
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