Combinatorics/Factorial Problem

  • Thread starter kuahji
  • Start date
  • #1
394
2
I need to prove algebraically

I couldn't get the LaTex to work properly, so I just wrote it up on my computer,

http://img703.imageshack.us/img703/4204/miscj.png [Broken]

Where am I going wrong here? Is my factorial algebra just incorrect, am I even on the right track?
 
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Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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hi kuahji! :smile:

(n-1)k-1 has (n - 1 - (k - 1))! = (n - k)! on the bottom :wink:
 
  • #3
394
2
Thanks :)
 

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