Re: What is Data Model FOR?

From: Arthur Keller <arthur_at_kellers_dot_org>
Date: Thu Apr 29 2004 - 13:20:05 CDT

At 11:10 AM -0700 4/29/04, Alan Dechert wrote:
> > Dear Daniel, thanks for your message. n! is good enough closed form
>> for me. But n! only gives you the full permutations of n!
>> candidates, not the partial permutations of up to n candidates. Do
>> you have a formula for that? Do you want to derive it?
>We went over this some time ago:
>The unordered combinations of n things taken k at a time is given by
>n!/(k! * (n-k)!)

David gave the answer anyway I wanted for ordered partial
combinations. It'd be interesting to see what the actual numbers
turn out to be.

Best regards,

Arthur M. Keller, Ph.D., 3881 Corina Way, Palo Alto, CA  94303-4507
tel +1(650)424-0202, fax +1(650)424-0424
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Received on Fri Apr 30 23:17:23 2004

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