Answer
5/7
Work Step by Step
The probability of an event not happening is equal to one minus the probability of it happening. Thus, we find:
$$1-\frac{2}{7}=\frac{5}{7}$$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.7 - Probability - 11.7 Exercises - Page 836: 54
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