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Topic: How frequently do coprime pairs of integers occur?
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Posts: 3
From: New Jersey
Registered: 11/22/11
How frequently do coprime pairs of integers occur?
Posted: Nov 22, 2011 9:20 AM
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If I select two positive integers p and q at random, what is the probability that gcd(p,q)=1?

I've run some Excel simulations that suggests the answer is about 0.60, but am looking for a reference or methodology on how to attack this problem.

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