document.write( "Question 40311: Please Help
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document.write( "In an algebra class, 21 students are competing to see who can create the most interesting problem involving permutations or combinations. Each student is allowed to submit only one entry. A first prize and a second prize will be awarded. In how many different ways can the instructor award one first prize and one second prize? \n" );
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Algebra.Com's Answer #25715 by Nate(3500)![]() ![]() ![]() You can put this solution on YOUR website! P(21,2) = 420 \n" ); document.write( " |