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MathGroup Archive 2007

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Re: Combination List

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77919] Re: [mg77869] Combination List
  • From: Carl Woll <carlw at wolfram.com>
  • Date: Tue, 19 Jun 2007 07:00:45 -0400 (EDT)
  • References: <200706181109.HAA19966@smc.vnet.net>

Bruno Campanini wrote:

>I know combinations of 4 elements taken 3 by 3 is 4,
>that is Binomial[4,3] = 4
>How can I get the list:
>1 2 3 
>1 2 4
>1 3 4
>1 4 2
>
>The same way I get permuations list from Permutations[{...}]
>???
>
>Bruno
>  
>
Try using Subsets:

In[43]:= Subsets[Range[4], {3}]

Out[43]= {{1, 2, 3}, {1, 2, 4}, {1, 3, 4}, {2, 3, 4}}

Carl Woll
Wolfram Research


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