Answer
$0.855$
Work Step by Step
Following the example, the probability is: $P(\text{A and B and C})=P(A)P(B|A)P(C|\text{A and B})=\frac{20}{20}\frac{19}{20}\frac{18}{20}=\frac{171}{200}=0.855$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
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
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