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#1 2014-06-19 03:22:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,728

Bitter urns.

An urn contains 100 purple balls, 300 orange balls, and 500 white balls.

If balls are drawn from the urn without replacement what is the probability that all the purple balls are gone before either of the other two colors are?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#2 2014-06-19 05:18:38

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,665

Re: Bitter urns.

Hi bobbym


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#3 2014-06-19 08:39:22

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,728

Re: Bitter urns.

Hi anonimnystefy;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#4 2014-06-19 09:13:42

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,665

Re: Bitter urns.

Hi bobbym

Last edited by anonimnystefy (2014-06-19 09:14:02)


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#5 2014-06-19 09:20:39

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,728

Re: Bitter urns.

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#6 2014-06-19 10:32:58

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,665

Re: Bitter urns.

Hm, okay.

What are the problems from Elaina you mentioned? I have very much free time these days, so I am able to focus more on doing math.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#7 2014-06-19 10:39:07

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,728

Re: Bitter urns.

I have not even looked at them but I have one that they can not get over there at the SE.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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