perplexus.info :: Probability : Random Primes

Random Primes (Posted on 2003-07-10)

If you pick any two integers at random, what is that probability that they will be relatively prime? ("relatively prime" means that the two numbers share no divisors except 1)

Tell how you end up with the answer.

See The Solution Submitted by not_so_einstein

Rating: 4.0000 (2 votes)

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answer

| Comment 8 of 9 |

The required probability is approximately 0.6079271 (correct to seven places of decimals)

Posted by K Sengupta on 2007-12-21 05:41:58

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