Question
Probability that A speaks truth is . A coin is tossed. A reports that a head appears. The probability that actually there was head is (A) (B) (C) (D)
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Question 2
Of the students in a college, it is known that 60% reside in hostel and 40% are day scholars (not residing in hostel). Previous year results report that 30% of all students who reside in hostel attain A grade and 20% of day scholars attain A grade in their annual examination. At the end of the year, one student is chosen at random from the college and he has an A grade, what is the probability that the student is a hostlier?Question Text | Probability that A speaks truth is . A coin is tossed. A reports that a head appears. The probability that actually there was head is (A) (B) (C) (D) |