document.write( "Question 839205: In how many ways can you arrange 4 boys and 4 girls in a row of 8 seats if one boy and a girl will insist not to be seated together .\r
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document.write( "//please help me ! \n" );
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Algebra.Com's Answer #505592 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! First, think about how many ways there \n" ); document.write( "are for the 1 boy and the 1 girl to \n" ); document.write( "sit together in the 8 seats \n" ); document.write( "You can make 7 adjacent pairs out of \n" ); document.write( "the 8 seats. That is the possible ways \n" ); document.write( "they can sit together \n" ); document.write( "------------------------------- \n" ); document.write( "If you forget about these two, there are \n" ); document.write( " \n" ); document.write( "seat, then there are \n" ); document.write( "2nd seat, \n" ); document.write( "That is: \n" ); document.write( " \n" ); document.write( "seat the 4 boys and 4 girls in 8 seats \n" ); document.write( "----------------------------- \n" ); document.write( "Now subtract the 7 ways that the 1 boy and \n" ); document.write( "1 girl can sit together \n" ); document.write( " \n" ); document.write( "------------------------------ \n" ); document.write( "I think this is right- you might get a 2nd \n" ); document.write( "opinion, though \n" ); document.write( " |