document.write( "Question 604776: In how many ways can 3 people be selected from 20 candidates?
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document.write( "for some reason I did 3 x 20 and get 60 but feel wrong. \n" );
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Algebra.Com's Answer #381446 by lawdej(58)![]() ![]() You can put this solution on YOUR website! your way is wrong use combination rule \n" ); document.write( "20C3=20!/((20-3)! x 3!)=(20 x 19 x 18)/6=20x19x3=1140 \n" ); document.write( " |