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

  1. #1
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    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
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  2. #2
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    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.
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  3. #3
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    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?
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