Chapter 0.5, Problem 9E

To determine

whether each situation involves a permutation or a combination and then to find the number of possibilities.

Answer to Problem 9E

The numbers of possibilities are 5040.

Explanation of Solution

Given information :

It is given that 7 shoppers in line at a checkout counter.

In the given event, the order of the shoppers in line matter, therefore, it is a permutation.

The number of possibilities is given by,

  $\begin{array}{c}=7!\\ =5040possibilities\end{array}$

So, the numbers of possibilities are 5040.