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Posers and Puzzles
Eastbourne
Joined 20 Sep '04 Moves 16434 RHP CHOSE Cup 'A' .
STAGE 2 OF Puzzle
I now raise cup 'B' to show the ball isnt underneath that cup.(bear in mind I actuall know which cup has the ball)
You now have a second chance to choose where tha ball is hidded.
You are allowed to change your mind.But you dont have to.
Do you stick with cup 'A' or switch to cup 'C' ?
Stay with 'A' or switch to 'C'.
False berry
Joined 14 Feb '04 Moves 28719 Originally posted by celticcountry
RHP CHOSE Cup 'A' .
STAGE 2 OF Puzzle
I now raise cup 'B' to show the ball isnt underneath that cup.(bear in mind I actuall know which cup has the ball)
You now have a second chance to choose where tha ball is hidded.
You are allowed to change your mind.But you dont have to.
Do you stick with cup 'A' or switch to cup 'C' ?
Stay with 'A' or switch to 'C'. Switch to C. The odds are 2/3 that the ball is under cup C, and only 1/3 that you picked right in the first place and it's under cup A.
Let's make a deal!
on the payroll
Joined 26 Nov '04 Moves 155080 http://mathforum.org/dr.math/faq/faq.monty.hall.html
Eastbourne
Joined 20 Sep '04 Moves 16434 Originally posted by BigDoggProblem
http://mathforum.org/dr.math/faq/faq.monty.hall.html lol
ok.
Game over.
Joined 01 May '05 Moves 390 Originally posted by celticcountry
lol
ok.
Game over. Everyone knew it was a Monty Hall. Why didn1t you post the whole thing or didn't post at all?
Like I said, you must assume that:
a)It is part of the rules that you must lift one cup.
b)You won't lift the cup with the ball.
Eastbourne
Joined 20 Sep '04 Moves 16434 Originally posted by fetofs
Everyone knew it was a Monty Hall. Why didn1t you post the whole thing or didn't post at all?
Like I said, you must assume that:
a)It is part of the rules that you must lift one cup.
b)You won't lift the cup with the ball. i didnt realize it was a well know one.
Out of my mind
Joined 25 Oct '02 Moves 20443 Originally posted by celticcountry
i didnt realize it was a well know one. It kept mathematicians busy for several years...
RHP IQ
Joined 17 Mar '05 Moves 1345 Originally posted by TheMaster37
It kept mathematicians busy for several years... Half of them got it wrong.
slatington, pa, usa
Joined 28 Dec '04 Moves 53223 Originally posted by Bowmann
Half of them got it wrong. Here is a Java animation of the problem, I tried it, if you switch
you really do win more often.
http://people.hofstra.edu/staff/steven_r_costenoble/MontyHall/MontyHallSim.html
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