Math Is Fun Forum
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#26 2013-07-02 05:20:55
Re: Glamor Geometric Series
Consider that the 4th person chose dish X.
The Probability that the 1st Person chose dish X is 1/5.
The Probability that the 2nd Person chose dish X is 1/5.
The Probability that the 3rd Person chose dish X is 1/5.
Therefore, the probability that anyone has chosen X before is 3/5.
So, the possibility that the dish is previously not chosen is 2/5
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#27 2013-07-02 05:22:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Glamor Geometric Series
Is that the exact question?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#28 2013-07-02 05:29:33
Re: Glamor Geometric Series
I would say yes, because the answer you gave me works
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#29 2013-07-02 05:32:26
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,643
Re: Glamor Geometric Series
The Probability that the 1st Person chose dish X is 1/5.
The Probability that the 2nd Person chose dish X is 1/5.
The Probability that the 3rd Person chose dish X is 1/5.
Therefore, the probability that anyone has chosen X before is 3/5.
That method is faulty. If there were 5 people before D, you would end up with 5/5 and no chance for D.
I'll work on an analytic method.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
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#30 2013-07-02 05:33:21
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Glamor Geometric Series
Must be different for me and you then. Mine requests a + b in a / b.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#31 2013-07-02 05:35:49
Re: Glamor Geometric Series
Agnishom wrote:The Probability that the 1st Person chose dish X is 1/5.
The Probability that the 2nd Person chose dish X is 1/5.
The Probability that the 3rd Person chose dish X is 1/5.
Therefore, the probability that anyone has chosen X before is 3/5.That method is faulty. If there were 5 people before D, you would end up with 5/5 and no chance for D.
I'll work on an analytic method.
Bob
Ya, so... What to do? 
Hi bobbym,
They ask me for a + b too
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#32 2013-07-02 05:37:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Glamor Geometric Series
You can not add them up.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#33 2013-07-02 05:42:11
Re: Glamor Geometric Series
Then?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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#34 2013-07-02 07:15:27
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Glamor Geometric Series
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#35 2013-07-02 07:52:10
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,643
Re: Glamor Geometric Series
hi
I get that too by my own method and a general formula too.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#36 2013-07-02 14:03:53
Re: Glamor Geometric Series
THanks 
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.
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