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#1 2006-03-30 09:07:00
- MathsIsFun
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Combinatorics Formulas
Combinatorics Formulas
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#2 2006-04-07 02:06:07
- ganesh
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Re: Combinatorics Formulas
Permutations
The number of Permutations (arrangements) of n different things taken r at a time
where n! = n(n-1)(n-2)(n-3)......4 x 3 x 2 x 1
Some Important results
Combinations
The number of combinations (selections) of n different things taken r at a time
Some Important results
Character is who you are when no one is looking.
#3 2006-10-02 03:27:21
- All_Is_Number
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Re: Combinatorics Formulas
Last edited by All_Is_Number (2006-10-02 10:48:10)
You can shear a sheep many times but skin him only once.