document.write( "Question 448453: How many 5 letters codes can be made if no letters can be used twice? \n" ); document.write( "

Algebra.Com's Answer #308594 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "How many 5  letters codes can be made if no letters can be used twice?
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document.write( "If there are 5 letters used only, then 5! or  5*4*3*2 = 120\r
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document.write( "If all 26 letters of the alphabet may be used for the code, then:
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document.write( "  26*25*24*23*22  \n" );
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