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==Factorial==
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The factorial of a number <math>n</math> is <math>n(n-1)(n-2)...(1)(0)</math> or also as ,<!--coming-->, and is denoted by <math>n!</math>.
  
 
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Revision as of 21:13, 5 October 2007



The Problem Solver's Resource
Introduction | Other Tips and Tricks | Methods of Proof | You are currently viewing page 7.

Combinatorics

Factorial

The factorial of a number $n$ is $n(n-1)(n-2)...(1)(0)$ or also as ,, and is denoted by $n!$.

Back to page 6 | Continue to page 8