"A bag contains 4 red and 4 black balls, another bag contains 2 red and  6 black balls.
Channel: Doubtnut
Date: 2019-12-27

"A bag contains 4 red and 4 black balls, another bag contains 2 red and
 6 black balls. One of the two bags is selected at random and a ball is drawn
 from the bag which is found to be red. Find the probability that the ball is
 drawn from the first"

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jee mains 2020, jee main january, class 12, jee main maths, jee 2020, cbse board, jee main question paper, up board question paper, up boards 2020, up board exam,up board sample paper, cbse class 12, cbse class 10, nageen prakashan, nootan publication