document.write( "Question 486201: Ms. Hariel's class has 21 students, how many combinations of 4 students can be made from the class? \n" ); document.write( "
Algebra.Com's Answer #332392 by chessace(471)![]() ![]() You can put this solution on YOUR website! Combos = Total! / (Subset! * (LeftOver!)) \n" ); document.write( "C = 21! / (4! * 17!) \n" ); document.write( "C = (21*20*19*18*(17!) / ((4*3*2*1) * 17!) \n" ); document.write( "C = (7*3 * 5*4 * 19 * 9*2) / (3*4*1*2) \n" ); document.write( "C = 7*5*19*9 = 5985. \n" ); document.write( " \n" ); document.write( " |