document.write( "Question 984391: The legislature of Puerto Rico consists of a 27-member Senate and a 51-member House of Representatives.\r
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document.write( "How many ways are there to choose a group of six members from the Puerto Rican legislature?
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Algebra.Com's Answer #605194 by mathmate(429)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Given: \n" ); document.write( "There are 27+51=78 members of the legislature. \n" ); document.write( "Find the number of ways to choose a 6-member group from the legislature. \n" ); document.write( " \n" ); document.write( "Solution: \n" ); document.write( "There are 78 choices to choose the first member, \n" ); document.write( "77 choices to choose the second, ... \n" ); document.write( "... \n" ); document.write( "73 choices to choose the sixth member \n" ); document.write( " \n" ); document.write( "So there is a total of \n" ); document.write( "78*77*76*75*74*73=184933148400 ways to choose. \n" ); document.write( "However, there are 6! ways to arrange among the six members, so the total number of ways to choose 6 members \n" ); document.write( "=184933148400/6!=256851595 ways. \n" ); document.write( " \n" ); document.write( "This can also be solved by the combination function, \n" ); document.write( "C(78,6)=78!/((78-6)!6!) \n" ); document.write( "=256851595 ways \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |