document.write( "Question 327122: if the letters A,B,C,D,E and F are to be used in a five letter code, how many
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document.write( "different codes are possible if repetitions ARE PERMITTED.
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document.write( "A- 625
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document.write( "B- 720
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document.write( "C- 7776
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document.write( "D- 1296\r
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document.write( "ANSWER C IS POSSIBLE IF REPETITIONS ARE NOT PERMITTED. BUT WHAT IF THEY ARE?\r
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document.write( "PLEASE HELP ME
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Algebra.Com's Answer #234291 by galactus(183)![]() ![]() You can put this solution on YOUR website! If repetition is allowed, then there are 6 choices for the first, 6 for the second, and so on.\r \n" ); document.write( "\n" ); document.write( "Thus, there are 6^5=7776 possible codes when repetition IS allowed.\r \n" ); document.write( "\n" ); document.write( "If not allowed, then there are 6 for the first, 5 for the second, and so on.\r \n" ); document.write( "\n" ); document.write( "Thus, there are 6!=720 different codes when repetition IS NOT allowed.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |