document.write( "Question 427880: I have 20 students, how many ways can I form a 10 student committee? \n" ); document.write( "
Algebra.Com's Answer #297539 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! If you have 20 students, the number of different ways you can form a 10-member committee is given by the expression: \n" ); document.write( "20 C 10 or\r \n" ); document.write( "\n" ); document.write( "20!/10!10!\r \n" ); document.write( "\n" ); document.write( "which is 20 factorial divided by (10 factorial times 10 factorial)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "20*19*18*17*16*15*14*13*12*11*10! \n" ); document.write( "--------------------------------- \n" ); document.write( "10*9*8*7*6*5*4*3*2*1*10!\r \n" ); document.write( "\n" ); document.write( "=\r \n" ); document.write( "\n" ); document.write( "19*17*13*11*4 = 184756\r \n" ); document.write( "\n" ); document.write( "Thus there are 184,756 different ways of choosing 10 people out of a 20 person pool. \n" ); document.write( " |