A bag contains 4 red and 4 , another bag contains 2 red and 6 . One of the two bags is selected at random and two are drawn at random (without replacement) from the bag which are both found to be red. Find the probability that the are drawn from the first bag.
Let E1 : event of selecting bag with 4 red and 4 and, E2 : event of selecting bag with 2 red and 6 .
Also let E : event of selecting 2 red ***** without replacement.
