The ! function

Fractions, ratios, percentages, exponents, number patterns, word problems without variables, etc.
FuRy
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The ! function

Postby FuRy » Wed Nov 10, 2010 4:05 pm

I have encountered a problem that says to solve "9!". What is the exclamation point mean and how do you properly use this function in word problems/real life situations?

Many thanks

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Martingale
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Re: The ! function

Postby Martingale » Wed Nov 10, 2010 6:18 pm

FuRy wrote:I have encountered a problem that says to solve "9!". What is the exclamation point mean and how do you properly use this function in word problems/real life situations?

Many thanks


!= factorial

9!=nine factorial



How many ways can you arrange 9 unique books in a row on a shelf...9! ways


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