12. A bag contains 4 white, 3 blue, and 6 red marbles. A marble is drawn from the bag,
replaced, and another marble is drawn. Find the probability that:
(a) both marbles are red
(b) both marbles are blue
(c) the first marble is red and the second is blue
(d) one marble is red and the other is blue
(e) neither is red
13. Do question 12 assuming that the first marble is not replaced.