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  #1  
Old 07-28-2005, 08:32 AM
TEKEE TEKEE is offline
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Default math
How does C(48,3)=17,296 & C(47,2)=1,081, work math out please thanks.
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  #2  
Old 07-28-2005, 08:36 AM
jason_t jason_t is offline
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Default Re: math
[ QUOTE ]
How does C(48,3)=17,296 & C(47,2)=1,081, work math out please thanks.

[/ QUOTE ]

C(48,3) = (48 * 47 * 46)/(3 * 2) and C(47,2) = (47 * 46)/2.
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  #3  
Old 07-28-2005, 09:04 AM
LetYouDown LetYouDown is offline
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Default Re: math
More generally:

C(n,r) = n!/[(n-r)! * r!]
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  #4  
Old 07-28-2005, 11:27 AM
elitegimp elitegimp is offline
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Default Re: math
[ QUOTE ]
More generally:

C(n,r) = n!/[(n-r)! * r!]

[/ QUOTE ]

and n! = n*(n-1)*(n-2)*...*2*1
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