

Title: Coprimality of Two Randomly Chosen Integers Post by william wu on Aug 21^{st}, 2003, 2:17pm Show that Conclude that the probability two randomly chosen integers are coprime is 6[pi]^{2}. 

Title: Re: Coprimality of Two Randomly Chosen Integers Post by SWF on Aug 21^{st}, 2003, 6:23pm What a coincidence! Just a few minutes ago I used that in solution to Random Line Segment in Square (http://www.ocf.berkeley.edu/~wwu/cgibin/yabb/YaBB.cgi?board=riddles_hard;action=display;num=1049132168) riddle. However I left out the details to keep my post from being too long. 

Title: Re: Coprimality of Two Randomly Chosen Integers Post by TenaliRaman on Aug 22^{nd}, 2003, 11:56am hey the second question's pretty neat!!! it had me hooked up for the last 5 hours before it dawned on me that P(coprime)=1P(not coprime) and the first result comes into play. 

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