SOLUTION: Using the letters A B C D E, (letters may not occur more than once) how many three-letter sequences are possible? How many four-letter and how many five-letter sequences?

Algebra ->  Permutations -> SOLUTION: Using the letters A B C D E, (letters may not occur more than once) how many three-letter sequences are possible? How many four-letter and how many five-letter sequences?      Log On


   

Question 564642: Using the letters A B C D E, (letters may not occur more than once) how many three-letter sequences are possible?
How many four-letter and how many five-letter sequences?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Using the letters A B C D E, (letters may not occur more than once)
how many three-letter sequences are possible?:::5*4*3 = 60
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How many four-letter:::5*4*3*2 = 120
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how many five-letter sequences?:::5! = 5*4*3*2*1 = 120
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Cheers,
Stan H.
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