SOLUTION: Please Help 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 su

Question 40311: Please Help
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?
Found 2 solutions by fractalier, Nate:
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Since 21 students can finish first and only 20 can then finish second, the total is 21 * 20 =
420 different ways...
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
P(21,2) = 420
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