Question 977309
In the Smart National Challenge, the probability of a person clearing the
certification, and appearing for the Equity Research certification is 0.5. There is a record that, given a candidate has appeared for an equity research
certification, the probability that he will clear it is 0.7. 
The chance of a person getting in top 10 rank holders and appearing for the equity research certificate s 0.3.
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What percentage of candidates, given they have appeared for an equity research certification, are likely to get into top 10 rank holders?
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p(top 10 |appear) = P(top 10 AND appear)/P(appear) = 
(0.5*0.7*0.3)/0.5 = 0.21
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Cheers,
Stan H.