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NCERT Class 6 Geography Chapter 4: Maps | English | CBSE | Amandeep Lamba

The probability that a student selected at random from a class will pass in Mathematics is 2/3 and the probability that he passes in Mathematics and English is 1/3 . What is the probability that he will pass in English if it is known that he has passed in Mathematics ?

The probability that a student selected at random from a class will pass in Hindi is 4/5 and the probability that he passes in Hindi and English is 1/2 . What is the probability that he will pass in English if it is known that he has passed in Hindi ?