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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### 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.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### Re: Bitter urns.

Hi anonimnystefy;

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### Re: Bitter urns.

Hi;

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

Offline

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

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### 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.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online