Results 1 to 2 of 2

Math Help - funny example the teacher gave us. dont know how to solve it.

  1. #1
    Newbie
    Joined
    Feb 2010
    Posts
    8

    funny example the teacher gave us. dont know how to solve it.

    if i have 10 girlfriends and i see a different one each day (i see one and only one per day) and every week i wanted to see seven of them in a different order than the week before. how long could i continue until i have exhausted all possible combinations?

    i said until they all find out about each other. i give it 2-3 months max. apparently that's not the right answer. so how do you solve this?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by bm203 View Post
    if i have 10 girlfriends and i see a different one each day (i see one and only one per day) and every week i wanted to see seven of them in a different order than the week before. how long could i continue until i have exhausted all possible combinations?

    i said until they all find out about each other. i give it 2-3 months max. apparently that's not the right answer. so how do you solve this?
    Count the number of permutations of 7 from 10 objects, that is the number of weeks you can continue before a repeat.

    CB
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 8
    Last Post: March 28th 2010, 06:45 PM
  2. Pleaseeee Helppp! I dont solve it
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: August 4th 2008, 03:11 AM
  3. Math teacher trying to be funny
    Posted in the Calculus Forum
    Replies: 2
    Last Post: May 18th 2008, 07:09 PM
  4. probability(teacher can't solve it- -)
    Posted in the Statistics Forum
    Replies: 3
    Last Post: May 10th 2008, 08:25 PM
  5. Maclaurin series, dont know how to solve it
    Posted in the Calculus Forum
    Replies: 15
    Last Post: April 23rd 2008, 12:10 PM

Search Tags


/mathhelpforum @mathhelpforum