document.write( "Question 890094: How many different committees of 7 people can be formed from a group of 10 people \n" ); document.write( "
Algebra.Com's Answer #538748 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! How many different committees of 7 people can be formed from a group of 10 people \n" ); document.write( "----------- \n" ); document.write( "Choose 1 of 10, then 1 of 9, etc \n" ); document.write( "--> 10*9*8*7*6*5*4 = 604800 \n" ); document.write( "----- \n" ); document.write( "But, choosing A,B,C,D,E,F,G is the same as A,C,D,E,F,G,B. There are 7*6*5*4*3*2*1 ways to choose any group of 7, = 5040 ways. \n" ); document.write( "--- \n" ); document.write( "604800/5040 = 120 different committees. \n" ); document.write( "----- \n" ); document.write( "= 10!/7! \n" ); document.write( " |