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Article #2695Re: Are you sure? NO - flame-resistant clothing ON <SPOILER>
From: David Karr
Date: Thu, 28 Jan 1993 19:59
Date: Thu, 28 Jan 1993 19:59
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In article <93027.155827RVESTERM@vma.cc.nd.edu> <RVESTERM@vma.cc.nd.edu> writes: >[...] let's dissect the question: "i have two children. >at least one is a daughter. what's the chance that the other is a daughter?" >is the same as "what is the chance that both of my children are female, given >that at least one is female?" Maybe. I have two children, at least one is a daughter. What's the chance that the other is a daughter? My mother has two children, at least one is a son. What's the chance that the other is a son? My cousin Charlotte has two children, at least one is a son. What's the chance that the other is a son? Is the answer 1/3 in all cases? Can you reconcile that with the fact that the first question is about daughters and the others are about sons? In any case, none of this has anything to do with meeting any of these offspring in the street, which is a different sampling procedure altogether. -- David Karr (karr@cs.cornell.edu)
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Newsgroups: rec.puzzles Path: arc1-ca.pugleaf.net!sparky!uunet!mdisea!uw-coco!uw-beaver!cornell!karr From: karr@cs.cornell.edu (David Karr) Subject: Re: Are you sure? NO - flame-resistant clothing ON <SPOILER> Message-ID: <1993Jan28.195915.16343@cs.cornell.edu> Organization: Cornell Univ. CS Dept, Ithaca NY 14853 References: <1993Jan26.115545.11556@eng.cam.ac.uk> <1993Jan26.121406.11680@eng.cam.ac.uk> <93027.155827RVESTERM@vma.cc.nd.edu> Date: Thu, 28 Jan 1993 19:59:15 GMT Lines: 27