Results 1 to 2 of 2

Math Help - Permutation or combination

  1. #1
    Junior Member
    Joined
    Mar 2007
    Posts
    34

    Permutation or combination

    Three pairs of twin women are each married to twin men in such a way that each woman's twin sister is married to her husband's twin brother. if all twelve of them enter a mixed doubles tennis tournament, in how many ways can they be arranged as six matched pairs. (i.e. in each pair there is one woman and one man.) so that no one is pair with their spouse or their twin's spouse?

    I wouldn't even know where to start..this problem is giving me a headace. Can someone please help and explain it to me. Thank you
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member malaygoel's Avatar
    Joined
    May 2006
    From
    India
    Posts
    648
    Let the (wife, husband) pairs be
    (a,d),(a,d),(b,e),(b,e),(c,f),(c,f)
    where {a,a,b,b,c,c} are women and rest are men.
    I think now you can try.

    Keep Smiling
    Malay
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. combination/permutation
    Posted in the Discrete Math Forum
    Replies: 0
    Last Post: October 17th 2008, 12:40 AM
  2. permutation and combination
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 11th 2008, 08:42 AM
  3. Permutation and Combination
    Posted in the Statistics Forum
    Replies: 2
    Last Post: September 28th 2008, 10:37 PM
  4. Permutation and Combination
    Posted in the Statistics Forum
    Replies: 5
    Last Post: February 16th 2008, 02:17 PM
  5. Combination/Permutation
    Posted in the Statistics Forum
    Replies: 6
    Last Post: September 11th 2007, 04:42 PM

Search Tags


/mathhelpforum @mathhelpforum