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- Newsgroups: sci.skeptic
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!udel!louie!pecan.cns.udel.edu!mccoy
- From: mccoy@pecan.cns.udel.edu (Don McCoy)
- Subject: Re: Innumeracy, humorous ... maybe.
- Message-ID: <1992Nov16.085945.9856@udel.edu>
- Sender: usenet@udel.edu (USENET News Service)
- Nntp-Posting-Host: pecan.cns.udel.edu
- Organization: Applied Physics: University of Delaware, Newark
- References: <1992Nov16.045407.29782@udel.edu> <1992Nov16.053228.22225@Princeton.EDU>
- Date: Mon, 16 Nov 1992 08:59:45 GMT
- Lines: 27
-
- roger@astro.princeton.edu (Roger Lustig) writes:
- >mccoy@pecan.cns.udel.edu (Don McCoy) writes:
- >>vnelson@ccu.umanitoba.ca (Gerald Vernon Nelson) writes:
- >
- >>>There was an article in our local paper about a year back on the
- >>>subject. The author went to lengths to point out how little people
- >>>understand numbers. In his example he used the 6/49 lottery.
- >>>You know, pick 6 different numbers from 49. He stated that people
- >>>just didn't understand that the odds of winning that lottery were
- >>>about 10 billion to 1 (49 * 48 * 47 *46 * 45 * 44).
- >
- >>Uh, I could be wrong here, but I believe 10 billion to 1 is right.
- >>How did you arrive at the 14 million to 1 figure???
- >
- >The 10-billion figure is the number of sequences of six numbers
- >selected from a pool of 49. But the sequence doesn't matter; if
- >you picked 1-2-3-4-5-7 as your bet, and it came out 7-4-5-2-3-1,
- >you'd still win. So you have to divide by the number of
- >permutations of six numbers, which is 6! (6 factorial) or
- >6 * 5 * 4 * 3 * 2 * 1 = 720. 10 billion / 720 is about 14 million,
- >no?
- >
- Right, if order doesn't matter. Thought it did in lotteries, but
- then again, I don't play.
-
- Thanks, ..don...
-
-