three turns of the same appearance are given as follows urn A contains 5 red and 6 white balls ,urn B contains 6 red and 4 white balls,urn C contains 3 red and 5 white balls A urn is selected at random and ball is drawn from the urn (A) what is probability that ball drawn is (B)what is probability that ball is from urn A given that ball is red
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