Results 1 to 3 of 3

Math Help - [SOLVED] permutations

  1. #1
    Senior Member
    Joined
    Oct 2008
    Posts
    323

    [SOLVED] permutations

    At the Olympics, there are four french judges, six Spanish judges and seven German judges. How many ways are there of sitting them in a row if judges of the same nationality are grouped together?

    I was thinking designating letters so ffffssssssggggggg

    \frac{17!}{4!6!7!}

    what do you think?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,923
    Thanks
    1762
    Awards
    1
    Try (3!)(4!)(6!)(7!). Can you explain why?
    Remember, they sit together.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Oct 2008
    Posts
    323
    Quote Originally Posted by Plato View Post
    Try (3!)(4!)(6!)(7!). Can you explain why?
    Remember, they sit together.
    Thanks Plato yes I can, see if we had ffffssssssggggg we would have 3! for each 3! ways they can be changed multiplied by the amount of judges from the different nationalities.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Permutations HELP!!!
    Posted in the Discrete Math Forum
    Replies: 4
    Last Post: July 19th 2009, 06:24 AM
  2. [SOLVED] permutations
    Posted in the Discrete Math Forum
    Replies: 6
    Last Post: February 17th 2009, 08:20 PM
  3. [SOLVED] Permutations
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: February 17th 2009, 11:33 AM
  4. [SOLVED] permutations 2
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: February 11th 2009, 09:06 PM
  5. [SOLVED] permutations 2
    Posted in the Discrete Math Forum
    Replies: 3
    Last Post: February 6th 2009, 02:37 PM

Search Tags


/mathhelpforum @mathhelpforum