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==<span style="font-size:20px; color: blue;">Combinatorics</span>== | ==<span style="font-size:20px; color: blue;">Combinatorics</span>== | ||
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==Factorial== | |||
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 20:13, 5 October 2007
CombinatoricsFactorialThe factorial of a number |
is 
or also as ,, and is denoted by 
.
