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- Newsgroups: sci.skeptic
- Path: sparky!uunet!think.com!yale.edu!jvnc.net!princeton!crux!roger
- From: roger@crux.Princeton.EDU (Roger Lustig)
- Subject: Re: Innumeracy, humorous ... maybe.
- Message-ID: <1992Nov16.053228.22225@Princeton.EDU>
- Originator: news@nimaster
- Sender: news@Princeton.EDU (USENET News System)
- Nntp-Posting-Host: crux.princeton.edu
- Reply-To: roger@astro.princeton.edu (Roger Lustig)
- Organization: Princeton University
- References: <1992Nov16.045407.29782@udel.edu>
- Date: Mon, 16 Nov 1992 05:32:28 GMT
- Lines: 29
-
- In article <1992Nov16.045407.29782@udel.edu> mccoy@pecan.cns.udel.edu (Don McCoy) writes:
- >In article <BxoJK2.KzI@ccu.umanitoba.ca>
- > vnelson@ccu.umanitoba.ca (Gerald Vernon Nelson) writes:
-
- >>Speaking of inummeracy...
-
- >>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).
-
- >>He was of course, inumerate himself, as the odds of winning are
- >>actually about 14 million to 1.
-
- >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?
-
- Roger
-
-