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- Newsgroups: sci.math
- Path: sparky!uunet!comp.vuw.ac.nz!cc-server4.massey.ac.nz!TMoore@massey.ac.nz
- From: news@massey.ac.nz (USENET News System)
- Subject: Re: Three-sided coin
- Message-ID: <1992Nov10.204733.25206@massey.ac.nz>
- Organization: Massey University
- References: <5413@daily-planet.concordia.ca>
- Date: Tue, 10 Nov 92 20:47:33 GMT
- Lines: 15
-
- In article <5413@daily-planet.concordia.ca>, mckay@alcor.concordia.ca (John McKay) writes:
- >
- >
- > "How thick should a coin be to have equal (=1/3) probability
- > of landing on its head,tail,or edge?"
- >
- > Surprisingly, making "reasonable" assumptions, this can be
- > done in your head.
- >
- I doubt it. Any asymmetrical object will be affected by air resistance
- in a fairly predictable way, so the probability will depend on how far
- the coin falls. One can hope that the bounce will be unpredictable, but
- that depends on the surface the coin falls on and was not specified in
- the problem. If you want to throw a randomising device, you'd better
- stick to Platonic solids.
-