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#1 2012-05-22 08:11:32

juantheron
Member
Registered: 2011-10-19
Posts: 312

dice probability

A and B alternately throw a die....The numbers they get on their throws are individually added......the first person to get a overall sum of 10 wins....what is the probability that A wins the game given that it is the first to start the game

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#2 2012-05-22 08:20:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

What happens if they go passed 10?


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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#3 2012-05-22 09:23:23

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

I would go with the guess that they win if they the total 10 or more.

Was I dreaming when I saw justlookingforthemoment post yesterday?


“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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#4 2012-05-22 09:44:36

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

I have never seen that person.

I would go with the guess that they win if they the total 10 or more.

That might be the case but probability problems are hard enough without having to deal with ambiguities in the questions.


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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#5 2012-05-22 09:49:55

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Well that is the only logical assumption,in my opinion.

I am sure you know justlookingforthemoment. He is a member here. A moderator no less!


“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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#6 2012-05-22 09:53:09

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Yes, but it is your opinion. The probability of one of them reaching exactly 10 is also a legitimate partition question. As for me I do not wish to use an entire afternoon working on the wrong problem.

justlookingforthemoment:

I do not know anything about this member. I do not even know what gender they are. This member was before my time.


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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#7 2012-05-22 09:56:02

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Well,from the wording we can see that there will always be a winner,whichisn't the case when they have to reach exactly 10.


“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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#8 2012-05-22 09:59:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Why not? First guy to exactly 10 wins? If both pass, new game. Just saying, a good answer should be preceded by a well thought out question.


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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#9 2012-05-22 10:04:31

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

It states nowhere that there can be a new game,and assuming that seems to me to be a little too far-fetched. But I do agree that bad wording can lead to wasting time and getting wrong answers.

Btw,do you know how to solve a Rubik's cube?


“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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#10 2012-05-22 10:06:12

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Could be, call the other a draw. It is also does not say anything about more than 10.

There are programs to solve Rubik's cubes.


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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#11 2012-05-22 10:28:05

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Look at it this way. If it was meant to say over 10 it would be a one word mistake. If it was meant to say what you said,that would be.missing.out a whole sentence. So over 10 is more likely to be the wording. And it is more intuitive.

I am asking you if you can solve it.


“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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#12 2012-05-22 10:31:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

I will wait for juan and a definite answer or more accurately, a definite question.

About the cube:

1) Sorry, but I rarely do anything that a computer can do.

2) With my hands I think I would need a chiropractor standing by and I do not have one.

3) There are already kids younger than you that can do them in around 4 seconds. The worst part is they do not have a sense of humor.

aliens152.gif


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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#13 2012-05-27 09:14:44

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Imust note that there will never be more than 10 throws each.


“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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#14 2012-05-27 09:48:41

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Hi anonimnystefy;

Yes. Just doesn't seem to simplify the problem.


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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#15 2012-05-27 10:06:29

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Maybe we can brute force it. Find all the possibilities. roll

Last edited by anonimnystefy (2012-05-27 10:06:52)


“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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#16 2012-05-27 10:08:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

I have run 2 simulations and know the answer.


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

#17 2012-05-27 10:20:13

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

What is it?


“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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#18 2012-05-27 10:22:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

What is it?

Now you are learning! Perhaps, you have stumbled onto the "Stone of Truth." And at only 15! Very impressive!

66%


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

#19 2012-05-27 10:30:05

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

Stone of Truth?


“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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#20 2012-05-27 10:35:05

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Yes, you finally asked a good question in post #17.


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

#21 2012-05-27 10:40:22

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

1)What were then my other questions?

2)How is that question good?


“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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#22 2012-05-27 10:42:07

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

1) Your other questions were the questions of a stuck in the mud mathematician.

2) Because perhaps your eyes are opening up to something else.


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

#23 2012-05-27 10:51:54

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

What do you mean,stuck in the mud mathematician?


“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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#24 2012-05-27 10:54:09

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: dice probability

Read any Einstein or Thorough?


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

#25 2012-05-27 10:56:07

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: dice probability

No,why?


“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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