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#1 2011-12-29 02:29:33
- juantheron
- Member
- Registered: 2011-10-19
- Posts: 312
no. of combination
the no. of combinations formed from the word DEGREE taking 4 letters at a time
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#2 2011-12-29 05:49:02
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: no. of combination
Hi juan;
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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#3 2011-12-30 05:49:11
- juantheron
- Member
- Registered: 2011-10-19
- Posts: 312
Re: no. of combination
thanks bobbym
would you like to give me a link of generating function.
thanks
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#4 2011-12-30 06:14:06
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: no. of combination
Hi juantheron;
Most of the links miss the point of generating functions. They go on and on about the properties of them as power series while never using them for their purpose. That is like describing the paint job of a car as if that is what is important about an automobile.
Best two books are Generatingfuntionology by Herbert S. Wilf and Applied Combinatorics by Alan S. Tucker.
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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#5 2012-01-08 01:09:34
- bherisrihari
- Member
- Registered: 2012-01-08
- Posts: 1
Re: no. of combination
in how many ways we can distribute "r" similar balls in "n" distinct locations?
I need formula derivation also.......
please help me
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#6 2012-01-08 02:22:02
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: no. of combination
Hi bherisrihari;
The number of different ways to distribute r indistinguishable balls into n distinguishable boxes is
Go here for everything else you need.
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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#7 2012-01-08 05:30:08
- juantheron
- Member
- Registered: 2011-10-19
- Posts: 312
Re: no. of combination
Thanks bobbym
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#8 2012-01-08 05:40:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: no. of combination
Hi juantheron;
Your welcome. Was the explanation provided clear enough?
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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