document.write( "Question 37117: Solve and please show work. Thank you!\r
\n" ); document.write( "\n" ); document.write( "How many four-letter groups can be made with the letters A, B, C, and D if the letters can be repeated?
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Algebra.Com's Answer #22795 by venugopalramana(3286)\"\" \"About 
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How many four-letter groups can be made with the letters A, B, C, and D if the letters can be repeated?
\n" ); document.write( "4 LETTER WORD....
\n" ); document.write( "I LETTER COULD BE ANY ONE OF 4 LETTERS A,B,C,D....SO ...4 WAYS.
\n" ); document.write( "II LETTER COULD BE ANY ONE OF 4 LETTERS A,B,C,D SINCE REPETETION IS ALLOWED....SO ...4 WAYS.
\n" ); document.write( "III LETTER COULD BE ANY ONE OF 4 LETTERS A,B,C,D SINCE REPETETION IS ALLOWED....SO ...4 WAYS.
\n" ); document.write( "IV LETTER COULD BE ANY ONE OF 4 LETTERS A,B,C,D SINCE REPETETION IS ALLOWED....SO ...4 WAYS.
\n" ); document.write( "HENCE NUMBER OF POSSIBILITIES =4*4*4*4=256
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