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## #1 2012-11-21 14:35:51

jacks
Member
Registered: 2012-11-21
Posts: 128

### dice probability

A six faced fair dice is thrown until 1 comes, then the probability that 1 comes in even no. of trials is

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## #2 2012-11-21 22:02:01

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,156

### Re: dice probability

Hi jacks;

I am getting

So the probability is 5 / 11.

This agrees with computer simulations.

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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## #3 2012-11-24 15:19:41

jacks
Member
Registered: 2012-11-21
Posts: 128

### Re: dice probability

Thanks bobbym

would you like to explain it to me

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## #4 2012-11-24 15:38:04

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,156

### Re: dice probability

Hi;

It is based on a tree and trick for summing series like that. What part do you need help on?

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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