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40% students of a college reside in hostel and the remaining reside outside.At the end of year,50% of the hosteliers got A grade while from outside students,only 30% got A grade in the examination.At the end of the year,a student of the college was chosen at random and was found to got A grade.What is the probability that the selected student was a hostelier?

Answer» 40% students of a college reside in hostel and the remaining reside outside.At the end of year,50% of the hosteliers got A grade while from outside students,only 30% got A grade in the examination.At the end of the year,a student of the college was chosen at random and was found to got A grade.What is the probability that the selected student was a hostelier?


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