Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 10 Counting Methods and Probability - 10.5 Find Probabilities of Independent and Dependent Events - Guided Practice for Examples 6 and 7 - Page 721: 7



Work Step by Step

Following the example, the probability is: $P(\text{A and B and C})=P(A)P(B|A)P(C|\text{A and B})=\frac{20}{20}\frac{19}{20}\frac{18}{20}=\frac{171}{200}=0.855$
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