The probability that a student selected at random from a class will pass in Hindi is and the probability that he passes in Hindi and English is What is the probability that he will pass in English if it is known that he has passed in Hindi?


One student is selected at random.


Let P(A) be the probability of students passing in English.


Let P(B) be the probability of students passing in Hindi.



Let be the probability of students passing in both English and Hindi.



Tip – By conditional probability, where is the probability of occurrence of the event A given that B has already occurred.


The probability that he will pass in English given that he passes in Hindi:






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