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#2 2012-12-04 19:10:39
- bobbym
- Administrator
Online
Re: Factorial Problem
Hi;
n = 49.
Solve this:
(n+2)(n+1) = 2550
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#4 2012-12-04 19:19:42
- debjit625
- Full Member
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Re: Factorial Problem
Ok I have seen this in my book too but ,I didn't understood how
expands into ,is their any special rules or am I missing something very basicDebjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
#5 2012-12-04 19:21:31
- bobbym
- Administrator
Online
Re: Factorial Problem
Hi;
(n+2)! = (n+2)(n+1)n (n-1)(n-2)(n-3)...1
n! =n (n-1)(n-2)(n-3)...1
(n+2)! = (n+2)(n+1)n!
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#6 2012-12-04 19:32:41
- debjit625
- Full Member
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Re: Factorial Problem
Now I got it thanks guys, it was so simple ,my book didnt have enough of factorials its more about permutation can you guys give me some resource on factorials...
Thanks
Debjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
#7 2012-12-04 19:35:38
- bobbym
- Administrator
Online
Re: Factorial Problem
Hi;
In order of difficulty.
http://www.mathsisfun.com/numbers/factorial.html
http://www.purplemath.com/modules/factorial.htm
http://www.themathpage.com/aprecalc/factorial.htm
http://en.wikipedia.org/wiki/Factorial
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#9 2012-12-04 19:41:24
- bobbym
- Administrator
Online
Re: Factorial Problem
Hi;
Please check post #7, they get more and more difficult.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#10 2012-12-05 04:54:07
- debjit625
- Full Member
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Re: Factorial Problem
Thanks bobbym for the link http://www.themathpage.com/aprecalc/factorial.htm
as I was searching factorial problems involving variables and it had some great stuff.
Debjit Roy
___________________________________________________
The essence of mathematics lies in its freedom - Georg Cantor
#11 2012-12-05 12:16:57
- bobbym
- Administrator
Online
Re: Factorial Problem
Hi debjit625;
You are welcome.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.