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#1001 2012-11-23 19:52:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;

I have missed your solutions and if you notice I have been training young anonimnystefy and others to follow in our footsteps!


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.

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#1002 2012-11-23 20:08:05

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Hi,

Yes, I too miss math. I need to find a way which can give me plenty of time!
I have noticed it, you are doing a good job.
It's nice to get hold of computers and math early.

See you later.


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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#1003 2012-11-23 20:10:41

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Thanks, he is a good student so it is easy.

See you later.


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.

Offline

#1004 2012-11-25 05:08:12

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

bobbym wrote:

Thanks, he is a good student so it is easy.

See you later.

Ahahahahahahaha... This is so funny, my tummy hurts!


“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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#1005 2012-11-25 05:13:19

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hmmmm, why is that such a reason for extreme jocularity?


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.

Offline

#1006 2012-11-25 05:17:26

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

bobbym wrote:

You got it!

New problem:

A die is rolled 20 times. What is the probability that the maximum value of the faces is 3?

A says) I still think it is:

B says) Nope!

C says) Seems impossible.

D says) I agree.

E says) I got it!

What is you answer?

Hi bobbym

Last edited by anonimnystefy (2012-11-25 09:52:45)


“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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#1007 2012-11-25 05:20:15

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

bobbym wrote:

Hmmmm, why is that such a reason for extreme jocularity?

It is very funny. Me a good student!


“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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#1008 2012-11-25 06:10:02

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;


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.

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#1009 2012-12-04 17:57:19

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

New Problem:

Baffler #222

The line y = x + 5 intersects the curve y = x^2 - 2x at points A and B . If we place Point C on the curve ( beneath A and B ) what is the maximum area of triangle ABC we can make? ( see the diagram )

A says) 20.

B says) That is close, the real answer is (7 +

C says) 20 sounds about right to me.

D says)C, why do always interrupt B before he can put his answer down? You know he is always wrong.

E says) I think he was right, I am getting that too.

What is the maximum area that can be attained?

View Image: 2012-12-04_215247.gif

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.

Offline

#1010 2012-12-04 20:55:37

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

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

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#1011 2012-12-04 21:00:48

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;


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.

Offline

#1012 2012-12-04 21:02:51

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Hi


“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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#1013 2012-12-04 21:05:32

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;


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.

Offline

#1014 2012-12-04 21:10:17

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Ahahahahahahahaha!

Btw, for a moment there I thought that D would actually realize the 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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#1015 2012-12-04 21:14:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

He will catch on eventually.


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.

Offline

#1016 2012-12-04 21:27:38

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Can't wait!

On the other hand, it seems that A and C will never catch on!


“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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#1017 2012-12-04 21:29:37

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?


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.

Offline

#1018 2012-12-04 21:31:54

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Hi


“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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#1019 2012-12-04 21:40:31

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;


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.

Offline

#1020 2012-12-04 21:55:29

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Hi

Thanks!

I will post my solution during the weekend if I remember! smile


“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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#1021 2012-12-04 22:02:36

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi;


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.

Offline

#1022 2012-12-06 10:23:51

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

New problem:

Baffler #223

A circle of unknown diameter has two perpendicular chords drawn in it. They are of the sizes given in the drawing. Find the area of the circle.

A says)290 sqr whatever.

B says) Nope.

C says) 3.14159... sqr units

D says) What are we talking about.

E says) I got it and it only took 5 minutes!

Find that area!

View Image: 2012-12-06_131822.gif

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.

Offline

#1023 2012-12-06 10:57:48

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,886

Re: Bafflers?

Hi bobbym

It's okay.


“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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#1024 2012-12-06 10:58:18

White_Owl
Member
Registered: 2010-03-03
Posts: 99

Re: Bafflers?

The more I think about the problem #1 in this thread, the less I believe in the answers given to it in this thread smile
I do not think we can talk about percentage of white marbles in the jar at all. We can talk only about probabilities.

At the beginning we have 50 blue and 50 white.
On a first step we can remove 25 blue, 25 white or any number of blues and white (up to 25). So after putting 25 blue ones back into the jar we can have either:
50b+50w, or 75b+25w, or some numbers in between.
After repeating this process the second time, numbers can become 50b+50w, or 100b+0w, or some numbers in between.

In other words, after 10 steps we can have 50% marbles in the jar are white, or 0% (possibly even after the second step) or any number between 0 and 50.

Last edited by White_Owl (2012-12-06 10:58:57)

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#1025 2012-12-06 11:01:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 83,251

Re: Bafflers?

Hi anonimnystefy;

Hi White_Owl;

What problem are you talking about?


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.

Offline

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