Results 1 to 3 of 3

Thread: Probability that two integers selected at random are prime to each other.

  1. April 9th 2012, 06:27 PM #1
    Suvadip
    Suvadip is offline
    Junior Member
    Joined
    Feb 2010
    Posts
    50

    Probability that two integers selected at random are prime to each other.

    What is the chance that two integers selected at random are prime to each other ? Please help me in solving it
    Follow Math Help Forum on Facebook and Google+
  2. April 10th 2012, 03:08 AM #2
    emakarov
    emakarov is offline
    MHF Contributor
    Joined
    Oct 2009
    Posts
    4,887
    Thanks
    459

    Re: Probability that two integers selected at random are prime to each other.

    It is not clear what probability measure to use on subsets of natural numbers.
    Follow Math Help Forum on Facebook and Google+
  3. April 10th 2012, 06:36 AM #3
    Wilmer
    Wilmer is offline
    MHF Contributor
    Joined
    Dec 2007
    From
    Ottawa, Canada
    Posts
    3,025
    Thanks
    60

    Re: Probability that two integers selected at random are prime to each other.

    Simple example: 5,10,15
    5,10
    5,15
    10,15 ***

    Probability is 1/3; is that what you mean?
    Follow Math Help Forum on Facebook and Google+
« convergence of measures | Not sure how to label the problem »

Similar Math Help Forum Discussions

  1. Probability that of 3 people selected at random, at least 2 were born on the same day
    Posted in the Statistics Forum
    Replies: 3
    Last Post: April 17th 2011, 10:56 AM
  2. [SOLVED] Conditinal Probability with numbers selected at random
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: October 6th 2010, 08:35 PM
  3. If a student is selected at random from those with a passing grade ....
    Posted in the Statistics Forum
    Replies: 1
    Last Post: June 5th 2010, 01:07 PM
  4. A random sample of size 36 is selected...?
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: February 1st 2010, 12:01 AM
  5. Probability that at least 1 was selected
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: February 25th 2008, 04:43 PM

Search Tags


/mathhelpforum @mathhelpforum