SOLUTION: There are 7 juniors and 11 seinors on a swim team. Out of these swimmers, 4 co-captains will be chosen. How many ways can these swimmers be chosen if there are 2 spots for juniors

Algebra ->  Probability-and-statistics -> SOLUTION: There are 7 juniors and 11 seinors on a swim team. Out of these swimmers, 4 co-captains will be chosen. How many ways can these swimmers be chosen if there are 2 spots for juniors       Log On


   

Question 619248: There are 7 juniors and 11 seinors on a swim team. Out of these swimmers, 4 co-captains will be chosen. How many ways can these swimmers be chosen if there are 2 spots for juniors and 2 spots for seinors.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

There are 7 juniors and 11 seinors on a swim team.  18 Total

4 co-captains will be chosen.

P(2Jr and 2 Sr) = 7C2*11C2/18C4 = 21*55/3060