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## #1101 2013-01-31 03:34:12

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

It doesnt mean that the drawing is correct and isnt missing a solution...

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
The knowledge of some things as a function of age is a delta function.

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## #1102 2013-01-31 03:41:04

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

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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## #1103 2013-02-23 22:48:48

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

New Problem:

C is playing with the diophantine equation
5*a + 25*b  + n*c = r.
He would like to find the largest integer value of n so that for every integer r > 30 the equation has a solution. He asks our distinguished panel:

A says) Thanks to Weirstrass and Poincare we know there is no way to find the answer.

B says) I think you mean Cayley, anyway I have the answer.

C says) Ah yes, Poincare! It is obvious that n = 1 is the only answer.

D says) Poincare?

E says) One is not the answer.

Can you find n?

Last edited by bobbym (2013-02-23 22:49:11)

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.

Online

## #1104 2013-02-28 03:17:49

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Should a,b and c be integers?

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
The knowledge of some things as a function of age is a delta function.

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## #1105 2013-02-28 03:26:21

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Hi;

Yes they should.

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.

Online

## #1106 2013-04-07 12:42:29

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1107 2013-04-07 12:50:26

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Hi;

I do not remember what the answer is, do you require it?

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.

Online

## #1108 2013-04-07 12:53:00

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Not immediately. I would like to check it, though.

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1109 2013-04-07 13:06:06

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

How did you get that answer?

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.

Online

## #1110 2013-04-07 13:07:09

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

By checking.

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1111 2013-04-07 13:11:02

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Yes, but what did you check?

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.

Online

## #1112 2013-04-07 13:15:10

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

I figured out n cannot be greater than 31 and that it must be one of the numbers 31, 26, 21, 16, 13, 11, 8, 7, 6, 4, 3, 2, 1. I checked if the equation has solutions for r=31, 32, 33 and 34, and the largest of the aforementioned numbers for which those equations had solutions was 8. What do you get?

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1113 2013-04-07 13:17:12

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

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.

Online

## #1114 2013-04-07 13:19:19

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1115 2013-04-07 13:20:59

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Hi;

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.

Online

## #1116 2013-04-07 13:21:25

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Which?

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1117 2013-04-07 13:24:24

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

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.

Online

## #1118 2013-04-07 13:28:35

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

The first one I get. The second one I do not. Can you explain 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
The knowledge of some things as a function of age is a delta function.

Offline

## #1119 2013-04-07 13:32:13

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Table[{k, FrobeniusNumber[{5, 25, k}]}, {k, 2, 27}]

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.

Online

## #1120 2013-04-07 13:36:44

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Hm, and you look for the first number in the table which is less than or equal to 30, right?

Last edited by anonimnystefy (2013-04-07 13:37:11)

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1121 2013-04-07 13:40:41

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Yes, can you explain the command used?

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.

Online

## #1122 2013-04-07 13:42:04

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Table or FrobeniusNumber?

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1123 2013-04-07 13:45:35

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Table, why was 27 too much?

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.

Online

## #1124 2013-04-07 13:48:32

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,018

### Re: Bafflers?

Because it is obvious we cannot make 31 with {5,25,27}.

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
The knowledge of some things as a function of age is a delta function.

Offline

## #1125 2013-04-07 13:53:15

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 107,188

### Re: Bafflers?

Yep! We are done.

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.

Online