document.write( "Question 556146: how many 5-letter arrangements are possible by selecting 5 different letters from the alphabet ? \n" ); document.write( "
Algebra.Com's Answer #362054 by fcabanski(1391)\"\" \"About 
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There are 26 letters in the alphabet.


\n" ); document.write( "There are 26 possibilities for the first letter.


\n" ); document.write( "Once that letter is gone, because each letter is different, there are 25 possibilities for the second letter.


\n" ); document.write( "3rd letter - 24 possibilities.
\n" ); document.write( "4th letter - 23 possibilities.
\n" ); document.write( "5th letter - 22 possibilities.


\n" ); document.write( "The total number of possibilities is all those multiplied:


\n" ); document.write( "26*25*24*23*22=7893600
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