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April 10th, 2013, 02:05 PM  #1 
Member Joined: Feb 2013 Posts: 44 Thanks: 0  permutation probability problem,,,
A company car that has a seating capacity of eight is to be used by eight employees who have formed a car pool. If only four of these employees can drive, how many possible seating arrangements are there for the group? So i understand that i should use the permuation formula becasue... ORDER MATTERS! but I'm not sure how the heck im supposed to set this up. guys please don't just post a link to somthing and make me read/ pick through a 4 page article to find what i need which may or may not be there. 
April 10th, 2013, 02:27 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,958 Thanks: 1146 Math Focus: Elementary mathematics and beyond  Re: permutation probability problem,,,
4 * (7 nPr 7) = 4 * 7! = 20160.

April 10th, 2013, 02:35 PM  #3 
Member Joined: Feb 2013 Posts: 44 Thanks: 0  Re: permutation probability problem,,,
thanks man!


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