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Topic: why do buses always come in 3s? , math book?
Replies: 69   Last Post: Jun 19, 2000 2:26 AM

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James Lawry

Posts: 3
Registered: 12/13/04
Re: why do buses always come in 3s? , math book?
Posted: May 27, 2000 12:06 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply



prezky@apple.com says...
> Don McDonald <dsmc@actrix.gen.nz> wrote:

[Mean lowest number in a 40-choose-6 lotto game]

> > > = 41/7
> >
> > =?? (N+1) / (L+1). ??
> > is this correct.?

[snip]
> > possible argument about beads on a necklace.
> Yes, how does it go again?

Isn't it something like this:

The N numbers represent gaps between N+1 beads on a string. Choosing L
numbers from N without replacement corresponds one-to-one to choosing a
way of colouring the N+1 beads with L+1 colours, with at least one bead
of each colour (since without replacement), and then stringing them on
the string so that colours are contiguous and in a particular order. (The
gap between two beads of different colours represents a lotto number.)
The mean value of the lowest number equals the mean number of beads of
the first colour (or any colour), and that's easy to work out.

Have I got that right?

James Lawry.






Date Subject Author
5/22/00
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don mcdonald
5/22/00
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5/22/00
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Peter
5/22/00
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Jens Brix Christiansen
5/24/00
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Charles Bryant
5/24/00
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Bob Tiernan
5/24/00
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Jeff Kurland
5/24/00
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John Haggerty
5/25/00
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Bob Tiernan
5/25/00
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Jeff Kurland
5/26/00
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Peter
5/25/00
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Marc VanHeyningen
5/25/00
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Peter
5/25/00
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Evad Rehtona
5/27/00
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Uncle Mort
5/28/00
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fred klein
5/29/00
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Jonathan Dushoff
5/29/00
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Rich Grise
5/29/00
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greg byshenk
5/29/00
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fred klein
5/31/00
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Marc VanHeyningen
6/6/00
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fred klein
6/10/00
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Charlie Thorne
6/11/00
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Marc VanHeyningen
6/14/00
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fred klein
6/19/00
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greg byshenk
5/29/00
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Peter
5/31/00
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Cyrek the Illogical
5/31/00
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Robin Payne
6/1/00
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Cyrek the Illogical
6/4/00
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Kragh Pedersen
6/4/00
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Rich Grise
6/4/00
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Andrew Price
6/6/00
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foo@bar.com
6/6/00
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FinalJustyce
6/6/00
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foo@bar.com
6/6/00
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FinalJustyce
6/8/00
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Rich Grise
6/10/00
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Rebecca Macann's News
6/11/00
Read [OT] (was: Re: why do buses always come in 3s? , math book?)
Kragh Pedersen
6/11/00
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Matthew T. Russotto
6/13/00
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Kragh Pedersen
6/13/00
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Rich Grise
6/11/00
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Robin Payne
6/11/00
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Matthew T. Russotto
6/11/00
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Rich Grise
6/11/00
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Matthew T. Russotto
6/11/00
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Rebecca Macann's News
6/12/00
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Rich Grise
6/8/00
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Magnus Homann
6/4/00
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Kragh Pedersen
6/5/00
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Laurence Bogle
6/11/00
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Aidan Stanger
5/22/00
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Bill
5/27/00
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Rebecca Macann's News
5/22/00
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Harpo
5/22/00
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Roy Everett Still no BOAT account!!
5/22/00
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Jason Rumney
5/22/00
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Brian M. Harmer
5/22/00
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gerson
5/23/00
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don mcdonald
5/22/00
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James Lawry
5/26/00
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watwinc
5/25/00
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Michael Press
5/26/00
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don mcdonald
5/26/00
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Michael Press
5/26/00
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Peter Percival
5/27/00
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James Lawry
5/30/00
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don mcdonald
5/30/00
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G Swaine

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