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## #26 2013-07-03 03:20:55

Agnishom
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### 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'
'Who are you to judge everything?' -Alokananda

## #27 2013-07-03 03:22:01

bobbym

Online

### Re: Glamor Geometric Series

Is that the exact question?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #28 2013-07-03 03:29:33

Agnishom
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### 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'
'Who are you to judge everything?' -Alokananda

## #29 2013-07-03 03:32:26

bob bundy
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### 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

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #30 2013-07-03 03:33:21

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #31 2013-07-03 03:35:49

Agnishom
Real Member

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### 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'
'Who are you to judge everything?' -Alokananda

## #32 2013-07-03 03:37:10

bobbym

Online

### Re: Glamor Geometric Series

You can not add them up.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #33 2013-07-03 03:42:11

Agnishom
Real Member

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### 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'
'Who are you to judge everything?' -Alokananda

## #34 2013-07-03 05:15:27

bobbym

Online

### Re: Glamor Geometric Series

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #35 2013-07-03 05:52:10

bob bundy
Moderator

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### Re: Glamor Geometric Series

hi

I get that too by my own method and a general formula too.

Bob

You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

## #36 2013-07-03 12:03:53

Agnishom
Real Member

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### 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'
'Who are you to judge everything?' -Alokananda