document.write( "Question 15710: The letters a, b, c, and d will be used to form passwords for the schools computer system. How many 4 letter passwords maybe formed if the letters can be used more than once in any passwrd?
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Algebra.Com's Answer #47833 by cassiroberts(11)\"\" \"About 
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there can be 20 four letters passwords formed \n" ); document.write( "
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