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Weightage Of Chapters in Class 12 Boards

Weightage of Chapters in Class 12 Boards Maths Exam ?

In a class of 45 student, 22 can speak hindi and 12 can speck English only ,Find the number of students , who can speak both Hindi and English -

In a class of 60 students, 25 speaks. Hindi, 45 speak English. How many of them speak both English and Hindi, if each student speaks either English or Hindi?

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 ?

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