Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

## #1 2012-02-29 20:52:24

bobbym

Online

### Bafflers?

Hi;

Due to increased traffic in my other two problem threads I have started this one. It will contain problems that appear difficult but are not. Or maybe, just not as difficult as the other two threads.

Baffler #1

An opaque jar contains100 marbles. 50 of them are blue and 50 are white. 25 marbles are picked out of the jar at random. They are discarded and 25 blue marbles are put into the jar. This process is done 9 more times. What percentage of white marbles remains?

A says) 4%

C says) I agree with either (A or B) or (A and B) I am not sure.

D says) C is right.

E says) B is close but he does not have an exact answer. I have a method.

B says) I have a method now!

Who is closest and can you find E's method?

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.

## #2 2012-02-29 22:26:33

phrontister
Real Member

Offline

### Re: Bafflers?

Hi Bobby,

EDIT:
Just found a
...not sure if it's E's, though.

Last edited by phrontister (2012-02-29 22:33:09)

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

## #3 2012-02-29 23:04:30

bobbym

Online

### Re: Bafflers?

Hi phrontister;

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.

## #4 2012-03-01 12:43:05

phrontister
Real Member

Offline

### Re: Bafflers?

Hi Bobby,

Last edited by phrontister (2012-03-01 13:34:42)

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

## #5 2012-03-01 16:29:16

bobbym

Online

### Re: Bafflers?

Hi phrontister;

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.

## #6 2012-03-01 17:08:19

phrontister
Real Member

Offline

### Re: Bafflers?

Hi Bobby,

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

## #7 2012-03-01 17:18:21

bobbym

Online

### 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.

## #8 2012-03-01 17:36:29

anonimnystefy
Real Member

Online

### Re: Bafflers?

Hi bobbym

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #9 2012-03-01 17:39:30

bobbym

Online

### Re: Bafflers?

It is roughly 7:37 AM for you. Is this not a little early for you?

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.

## #10 2012-03-01 17:43:39

anonimnystefy
Real Member

Online

### Re: Bafflers?

Hi bobbym

You don't like seeing me online?

Anyway, my classes start a little later for me today, so I am able to go here with wifi on my phone.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #11 2012-03-01 17:44:29

bobbym

Online

### Re: Bafflers?

I do not mind at all. But it is a change in your habits.

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.

## #12 2012-03-01 17:47:16

anonimnystefy
Real Member

Online

### Re: Bafflers?

Hi bobbym

It's not.I usually wake up at 6.30 when I go to school I'm the morning

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #13 2012-03-01 17:48:04

phrontister
Real Member

Offline

### Re: Bafflers?

Hi Bobby,

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

## #14 2012-03-01 17:48:51

bobbym

Online

### Re: Bafflers?

6:30 AM was a little early for me.

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.

## #15 2012-03-01 17:51:27

anonimnystefy
Real Member

Online

### Re: Bafflers?

So were you ever late for school?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #16 2012-03-01 17:53:06

bobbym

Online

### Re: Bafflers?

Hi phrontister;

I understand perfectly. It is okay to tell all your ideas and it is welcomed by me. I also thank you for looking at the problem.

I was never late for school.

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.

## #17 2012-03-01 17:55:38

anonimnystefy
Real Member

Online

### Re: Bafflers?

Hi bobbym

That's a little farfetched (if that word can be used here). Never is a strong word, unlike ever.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #18 2012-03-01 17:57:30

bobbym

Online

### Re: Bafflers?

As farfetched as it may seem to you nevertheless it is the truth.

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.

## #19 2012-03-01 18:02:25

anonimnystefy
Real Member

Online

### Re: Bafflers?

If you say so.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #20 2012-03-01 18:05:21

bobbym

Online

### Re: Bafflers?

I had trouble showing up and when I did, it was trouble but I was never late.

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.

## #21 2012-03-01 18:07:23

anonimnystefy
Real Member

Online

### Re: Bafflers?

So you were always either on time, or didn't show up at all?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

## #22 2012-03-01 22:17:05

bobbym

Online

### Re: Bafflers?

That is correct! Some classes were so delightful I would never miss them. Others bored me to tears.

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.

## #23 2012-03-03 00:06:44

gAr
Star Member

Offline

### Re: Bafflers?

Hi bobbym,

"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."

## #24 2012-03-03 00:18:49

bobbym

Online

### Re: Bafflers?

Hi gAr;

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.

## #25 2012-03-03 00:26:12

gAr
Star Member

Offline

### Re: Bafflers?

Hi bobbym,

Thanks for reminding me of the problem, I almost forgot the solution.

"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."