Results 1 to 5 of 5

Math Help - find triples of positive integers.

  1. #1
    Newbie
    Joined
    Jul 2009
    Posts
    23

    find triples of positive integers.

    1.Find triples of positive integers (x,y,z) such that xyz+xy+yz+xz+x+y+z=243.
    im thinking of using congruence modulo.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Opalg's Avatar
    Joined
    Aug 2007
    From
    Leeds, UK
    Posts
    4,041
    Thanks
    7
    Quote Originally Posted by nh149 View Post
    1.Find triples of positive integers (x,y,z) such that xyz+xy+yz+xz+x+y+z=243.
    im thinking of using congruence modulo.
    Write it as (1+x)(1+y)(1+z) = 244, and then think of the possible ways of factoring 244.

    Edit. Same problem was already answered in another thread.
    Last edited by Opalg; September 16th 2009 at 01:02 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor Bruno J.'s Avatar
    Joined
    Jun 2009
    From
    Canada
    Posts
    1,266
    Thanks
    1
    Awards
    1
    Why do you and "redcherry" post all the same problems?
    I smell spam.

    I answered the very same question yesterday here

    And then there's this problem and that problem... given that you two have registered almost at the same time, something weird is going on.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Member
    Joined
    Aug 2009
    Posts
    170
    Thanks
    8
    They might be classmates that don't know each other, or same class, but different section/teacher, or ... the problem might be coming from the same textbook ... Wouldn't quite make sense though if it's spam since Bruno answered on that last link before nh149's post
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Jul 2009
    Posts
    23
    maybe we're in the same claz..hehe..
    i've to find her or him..;P
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: October 3rd 2011, 04:40 AM
  2. Find all positive integers for an equation
    Posted in the Algebra Forum
    Replies: 2
    Last Post: April 8th 2011, 08:42 AM
  3. Find positive integers
    Posted in the Number Theory Forum
    Replies: 7
    Last Post: April 22nd 2009, 03:37 PM
  4. Find all positive integers such that...?
    Posted in the Algebra Forum
    Replies: 3
    Last Post: July 20th 2008, 12:20 PM
  5. Replies: 2
    Last Post: July 5th 2005, 07:20 PM

Search Tags


/mathhelpforum @mathhelpforum