document.write( "Question 564642: Using the letters A B C D E, (letters may not occur more than once) how many three-letter sequences are possible?
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Algebra.Com's Answer #365401 by stanbon(75887)\"\" \"About 
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Using the letters A B C D E, (letters may not occur more than once)
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\n" ); document.write( "How many four-letter:::5*4*3*2 = 120
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\n" ); document.write( "how many five-letter sequences?:::5! = 5*4*3*2*1 = 120
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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