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

$5.5\times10^{-6}$
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 $p=20/10!=5.5\times10^{-6}$