document.write( "Question 67371This question is from textbook Advanced mathematics
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document.write( ": How many four-digit counting numbers can be made from the digits 1,2,3, and 4 if 2 and 3 must be next to each other and if repetition is not permitted? \n" );
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Algebra.Com's Answer #47948 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many four-digit counting numbers can be made from the digits 1,2,3, and 4 if 2 and 3 must be next to each other and if repetition is not permitted? \n" ); document.write( "-------- \n" ); document.write( "If 2 and 3 must be next to each other they act like one letter but \n" ); document.write( "their order may be 2-3 or 3-2 i.e. 2! ways \n" ); document.write( "Acting like one letter you get 3! arrangements; switching the order \n" ); document.write( "of the 23 you get a total of 3!(2!)=12 acceptable patterns \n" ); document.write( "------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |