document.write( "Question 629234: Eight people, all of different heights, are to be seated in a row. Neither the tallest person nor the shortest person is seated at either end of the row.\r
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document.write( "a.) how many different seating arrangements are possible?\r
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document.write( "b.) what is the probability that the tallest and shortest people are sitting next to each other? \n" );
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Algebra.Com's Answer #396128 by stanbon(75887) ![]() You can put this solution on YOUR website! Eight people, all of different heights, are to be seated in a row. Neither the tallest person nor the shortest person is seated at either end of the row. \n" ); document.write( "a.) how many different seating arrangements are possible? \n" ); document.write( "---- \n" ); document.write( "# of ways to succeed: \n" ); document.write( "1st position: 6 ways \n" ); document.write( "8th position: 5 ways \n" ); document.write( "2nd thru 7th positions: 6! ways \n" ); document.write( "Total ways: 30*6! = 21600 \n" ); document.write( "-------------------------------------- \n" ); document.write( "b.) what is the probability that the tallest and shortest people are sitting next to each other? \n" ); document.write( "# of ways to succeed: \n" ); document.write( "1st position: 6 ways \n" ); document.write( "8th position: 5 ways \n" ); document.write( "2nd thru 7th positions: 2*5! = 240 (treat the 2 persons as one) \n" ); document.write( "Ans: Probability = (6*5*240)/21600 = 1/3 \n" ); document.write( "======================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "========================\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |