Article View: rec.puzzles
Article #2471Are you sure?
From: Sean Morgan
Date: Fri, 22 Jan 1993 19:17
Date: Fri, 22 Jan 1993 19:17
8 lines
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914 bytes
You meet the daughter of a friend of yours on the street. You know that your
friend has two children. You think to yourself, "Ignoring the occurrence of
twins, and sex-linked differences in birth rates and infant mortality, what are
the odds of this girl's sibling also being a girl?"
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Sean Morgan | ALBERTA 6815 - 8 Street N.E.
| RESEARCH Calgary, AB, Canada
morgan@arc.ab.ca | COUNCIL T2E 7H7
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!malgudi.oar.net!caen!destroyer!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!janus.arc.ab.ca!janus.arc.ab.ca!news Newsgroups: rec.puzzles Subject: Are you sure? Message-ID: <1993Jan22.131719.36@janus.arc.ab.ca> From: morgan@arc.ab.ca (Sean Morgan) Date: 22 Jan 93 13:17:18 MDT Distribution: world Organization: Alberta Research Council Nntp-Posting-Host: 128.144.5.37 Lines: 9