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Re: permutations?

  • To: mathgroup at
  • Subject: [mg46469] Re: permutations?
  • From: "Amir" <z64043 at>
  • Date: Fri, 20 Feb 2004 00:29:14 -0500 (EST)
  • References: <c11sc1$n64$>
  • Sender: owner-wri-mathgroup at

Use the built-in function "Permutations"



"sean kim" <sean_incali at> wrote in message
news:c11sc1$n64$1 at
> I think this is a permutation problem. but i'm not sure. do correct
> me.
> let's say you have...
> a, b, c, d, e   and...
> a', b', c', d', e'
> what are the possible combination will go from a( or a' ) to e ( or
> e')
> so that you get...
> {a b c d e}, {a b c d e'}, {a b c d' e}, {a b c d' e'}, {a b c' d e},
> { a b c' d' e}, {a, b, c' d e'}, {a, b, c' d' e'} on
> I have 32 from doing it the brute force way by hand.  how do i do that
> with Mathematica? I don't think it's fully connected graph.  because a
> connects to downstream b or b'
> also... what kinda problem is described above?
> Thank you all very much in advance for any thoughts and comments.
> sean

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