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Topic: Probability of a Triangle
Replies: 9   Last Post: Sep 19, 2004 9:07 AM

 Messages: [ Previous | Next ]
 Pat ballew Posts: 455 Registered: 12/3/04
RE: Probability of a Triangle
Posted: Sep 15, 2004 11:29 AM

I love the last statement here where the stick is bronken at random, and
then the selection of which of the two sticks to break again is a
probability distribution based on their relative sizes, of course there are
still an abundant number of ways to rank that probability, but I think I
want to try the most direct, what if the probability of selecting either
stick was in the ratio of their length to the whole,, so if part a was 1/4 "
and part B was 3/4 " then the prob of picking A is 1/4 and the prob of
picking B is 3/4... A nice extension to the problem.... Any quick solutions?

Pat Ballew
Lakenheath, UK

MathWords http://www.pballew.net/etyindex.html

-----Original Message-----
From: owner-geometry-puzzles@mathforum.org
[mailto://owner-geometry-puzzles@mathforum.org] On Behalf Of Alexander
Bogomolny
Sent: Tuesday, September 14, 2004 2:59 AM
To: geometry-puzzles@mathforum.org
Subject: Re: Probability of a Triangle

On May 29 15:45:21 1996, Pat Ballew wrote:
> a) If a unit length segment is randomly broken at two points
along
> its length, what is the probability that the three pieces
created in
> this fashion will form a triangle?
> b) If the length is broken at a random point, and then one of

the two
> pieces is randomly selected and broken at a random point on its
length
> what is the probability that the three pices will form a
triangle
>

See

http://www.cut-the-knot.org/Curriculum/Probability/TriProbability.shtml

Date Subject Author
5/29/96 Pat Ballew
6/5/96 Daniel A. Asimov
6/7/96 Alan Lipp
6/7/96 Daniel A. Asimov
7/12/04 Van L. Nguyen
9/13/04 Alexander Bogomolny
9/15/04 Pat ballew
9/19/04 Alexander Bogomolny
9/15/04 Pat ballew
9/18/04 Alexander Bogomolny