document.write( "Question 151446: In how many ways can 10 people be seated at a round table if 3 of them sit next to each other?\r
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document.write( "my answer is 10080. is it correct? \n" );
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Algebra.Com's Answer #111333 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! your answer seems low\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the 3 together are a single position, leaving 7 other positions \n" ); document.write( "__ putting 8 things in 8 positions (order counts) 8P8 or 8!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "with the round table, each arrangement is repeated 8 times \n" ); document.write( "__ with the difference being the \"starting point\" position \n" ); document.write( "__ if the only concern is who is next to who, then the number of arrangements is reduced by a factor of 8 to 7!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the 3 together can also have different arrangements \n" ); document.write( "__ 3 things in 3 positions (order counts) 3!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the answer should be the product of 7! and 3! \n" ); document.write( " |