AIME15 Hardcore TMF user
Number of posts : 163 Age : 27 Location : Pleasanton, CA Registration date : 2008-08-13
| Subject: Simple Problem: Wed Aug 13, 2008 3:48 pm | |
| Ed, Edd, and Eddy want to go to the movie theater. In how many orders can they sit in?
Answer: Ed has 3 choices, Edd has 2, and Eddy has one. So our answer is 3*2*1=6.
Note: 3*2*1 is the same as 3!. In general, n!=n*(n-1)(n-2)...*2*1. | |
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Dojo Admin
Number of posts : 154 Location : Probably somewhere near a computer Registration date : 2008-08-12
| Subject: Re: Simple Problem: Wed Aug 13, 2008 5:11 pm | |
| Hmm... Let me latexify that | |
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xoangieexo Starting Member
Number of posts : 7 Age : 29 Registration date : 2008-08-14
| Subject: Re: Simple Problem: Thu Aug 14, 2008 6:42 am | |
| You should note that it is called a factorial. | |
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