Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 4 - Probability - 4-6 Counting - Page 180: 8

Answer

$\frac{1}{5040}$

Work Step by Step

By using the factorian rule we can get the number of possibilities: $7!=7\times6\times5\times4\times3\times2\times1=5040$. We also know that $probability=\frac{number \ of \ good \ outcomes}{number\ of\ all\ outcomes}$, therefore $P=\frac{1}{5040}$.
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