[Solution] a) A class consists of 50 students. 20 of them are girls and 30 boys. 10 of them are rich and remaining poor. 5 of them are fair complexioned,
Question: a) A class consists of 50 students. 20 of them are girls and 30 boys. 10 of them are rich and remaining poor. 5 of them are fair complexioned, 3 are intelligent. What is the probability of selecting a fair-complexioned rich intelligent girl?
b) A bag contains 1 white and black balls. P who speaks truth in 5 cases out of six says that a while ball was drawn from a bag. What is the probability that the while ball was really drawn from the bag?
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Partial Fraction Decomposition - MathCracker.com