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#76 2013-03-27 03:50:45

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

12 is correct.

The other problem does not support linearity therefore it is much much tougher.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#77 2013-03-27 03:57:34

anonimnystefy
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From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: Another coin problem

Is the other one asking for the probability of there being a pair of cards with the same suit?


“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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#78 2013-03-27 03:58:55

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Yes, same as the other question. Adjacent cards are of the same suit.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#79 2013-03-28 19:52:34

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

How to solve it?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#80 2013-03-28 20:17:48

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Solve it? By analytical methods, no way!


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#81 2013-03-28 20:29:01

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

What are analytical methods?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#82 2013-03-28 20:44:19

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

The methods of mathematics. They actually only solve a very limited set of problems.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#83 2013-03-28 20:45:50

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

Really? I thought they solve all problems.

Then, what are non-analytical methods?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#84 2013-03-28 20:48:08

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

The methods I have been trying to pound into anonimnystefy, zetafunc and you.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#85 2013-03-28 20:50:07

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

Sorry but I do not know what you are talking about


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#86 2013-03-28 20:52:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Hmmm, geogebra and programming are two non mathematical methods to get answers to problems when the math fails to.

Really? I thought they solve all problems.

So did I... It seems that way to you now because you are never given a problem in school that they do not solve.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#87 2013-03-28 20:54:35

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

But geogebra does it internally with math and programming


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#88 2013-03-28 20:56:44

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Somewhat but it may also use iterative algorithms and lots of computation. In industry you will face many more problems that do not have nice clean book answers. They still need to be solved!


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#89 2013-03-28 20:58:19

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

In industry of what?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#90 2013-03-28 21:02:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Lets say a corporation that manufactures metals for aircraft or something connected with the military or defense. Something like that, the math will be very different from what they teach in school. School actually gives students many wrong impressions about what can be solved and what can not.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#91 2013-03-28 21:12:24

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

By the way, What is gcse level math?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#92 2013-03-28 21:13:06

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

It is I believe something to do with math in England.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#93 2013-03-28 21:29:18

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

Is it very tough?
Am I fit for it?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#94 2013-03-28 21:36:48

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

There is a simple rule that they are hiding from everyone that answers that question.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#95 2013-03-28 21:37:50

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

So what the rule is?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#96 2013-03-28 21:42:32

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#97 2013-03-28 21:52:38

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

Does it mean you have already taken gcse?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#98 2013-03-28 21:55:59

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,366

Re: Another coin problem

Nope, I live in the US and have never even heard of GCSE. I thought you were talking about non - mathematical methods. I am sorry for the confusion.

As for tests I do not think you will have much problem with anything you put your mind to.

You have GCSE in India?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#99 2013-03-28 22:16:32

zetafunc.
Guest

Re: Another coin problem

Agnishom wrote:

By the way, What is gcse level math?

In England, you take GCSEs when you are 15-16. It is the highest level of compulsory education. GCSE-level maths shouldn't really be a problem for you; if you are able to solve the geometry/number theory/etc. problems you have been posting, it won't be much trouble. The spec is pretty broad as I remember it, there isn't any mechanics but there is a bit of stats. Google GCSE Edexcel Maths (Linear) for an idea of what the level would be like. Typically the course is studied over two years but it can of course be done a lot quicker if you know much of it already.

You can achieve anything from A*, A, B, C, D, E, F, G, U (unclassified). Anything from A*-G is a pass. My maths exam board (Edexcel) had two tiers when I did it, Higher Tier and Foundation Tier. You could achieve an A*-D on the higher paper, and C-G on the lower paper (or U on either).

#100 2013-03-28 22:39:10

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 16,664
Website

Re: Another coin problem

No, we do not have GCSE in India. Atleast I don't think so.

Zetafunc, thank you for your info.
Y U NO SIGN UP?


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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