SOLUTION: 4. In a certain class there are 21 students in subject A, 17 in subject B and 10 in subject C. Of these 12 attend subjects A and B, 5 attend subjects B and C, 6 attend subjects A a

Question 927840: 4. In a certain class there are 21 students in subject A, 17 in subject B and 10 in subject C. Of these 12 attend subjects A and B, 5 attend subjects B and C, 6 attend subjects A and C. These include 2 students who attend all the three subjects. Find the probability that a student studies one subject alone.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
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