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Mathematics 8 Online
OpenStudy (anonymous):

Given the letters A,B,C,D,E, and F, how many unique 4-letter words can you form from them? (Note: The words do not have to be actual English words.)

OpenStudy (anonymous):

Confused with this probability question. Does it go something like this? > 6 letters. 4 Letter words .... 6* 4!

OpenStudy (anonymous):

Or.... \[6P4= 6!\over(6-4)! \]

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