document.write( "Question 682463: John keeps the phone numbers for his seven closest friends(3 men and 4 women) in his phone digital memory. How many ways can he list them if:\r
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document.write( "a. men are listed before women?\r
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document.write( "b. men are all listed next to each other?\r
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document.write( "c. women are all listed next to each other?\r
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document.write( "d. men and women alternate? \n" );
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Algebra.Com's Answer #423191 by stanbon(75887) ![]() You can put this solution on YOUR website! John keeps the phone numbers for his seven closest friends(3 men and 4 women) in his phone digital memory. How many ways can he list them if: \n" ); document.write( "a. men are listed before women?:::: 3!*4! = 6*24 = 144 ways \n" ); document.write( "------------------------------------ \n" ); document.write( "b. men are all listed next to each other?:::3!*5! = 720 \n" ); document.write( "------------------------------------ \n" ); document.write( "c. women are all listed next to each other?:::4!*4! = 576 \n" ); document.write( "===================================== \n" ); document.write( "d. men and women alternate?::::3!*4! = 144 ways \n" ); document.write( "========================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |