Results 1 to 5 of 5

Math Help - positive intergers <= 100, divisible either 8 or 12?

  1. #1
    Newbie
    Joined
    Dec 2012
    From
    orlando
    Posts
    10

    positive intergers <= 100, divisible either 8 or 12?

    .
    Last edited by brianjasperman; December 14th 2012 at 07:51 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,605
    Thanks
    1574
    Awards
    1

    Re: positive intergers <= 100, divisible either 8 or 12?

    Quote Originally Posted by brianjasperman View Post
    QUESTION:
    "Find the number of positive intergers not exceeding 100 that are not divisible by either 8 or 12. I get 84
    This is the number of positive intergers not exceeding 100 that are divisible by either 8 or 12 \left\lfloor {\frac{{100}}{8}} \right\rfloor  + \left\lfloor {\frac{{100}}{{12}}} \right\rfloor  - \left\lfloor {\frac{{100}}{{24}}} \right\rfloor
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Dec 2012
    From
    orlando
    Posts
    10

    Re: positive intergers <= 100, divisible either 8 or 12?

    .
    Last edited by brianjasperman; December 14th 2012 at 07:50 PM.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Dec 2012
    From
    orlando
    Posts
    10

    Re: positive intergers <= 100, divisible either 8 or 12?

    I see now. I wrote ARE DIVISIBLE, when I meant to say ARE NOT....
    So, I am right?
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Dec 2012
    From
    orlando
    Posts
    10

    Re: positive intergers <= 100, divisible either 8 or 12?

    If you liked that problem, I also posted a fun spanning tree problem about 1 hour ago. Try it out, it's a blast....please

    Marry Christmas!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Positive integer not divisible by 7
    Posted in the Algebra Forum
    Replies: 5
    Last Post: January 15th 2011, 04:51 AM
  2. Replies: 2
    Last Post: June 1st 2010, 02:49 AM
  3. Solutions in non negative and positive intergers
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: March 24th 2010, 09:00 AM
  4. Replies: 3
    Last Post: February 3rd 2010, 09:30 AM
  5. Replies: 2
    Last Post: September 22nd 2007, 02:03 PM

Search Tags


/mathhelpforum @mathhelpforum