Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 4 - Probability and Counting Rules - 4-5 Probability and Counting Rules - Exercises 4-5 - Page 245: 2



Work Step by Step

Cards numbered 1–10 are shuffled and dealt face down. What is the probability that they are in order? The total number of outcomes is $10!$ Favorable outcomes are those in order such as $1--10, 2--10-1,...10-1--9$, and $10--1,9--1-10,...1-10--2$ with a total of 20. The probability is $p=20/10!=5.5\times10^{-6}$
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