Mathematics, 26.03.2021 14:00 cicilee49

Of the students in the college, 60% of the students reside in the hostel and 40% of the students are day scholars. Previous year result reports that 30% of all students who stay in the hostel scored A Grade and 20% of day scholars scored A grade. At the end of the year, one student is chosen at random and found that he/she has an A grade. What is the probability that the student is a hostlier?

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Of the students in the college, 60% of the students reside in the hostel and 40% of the students are...