Quote:
Bag P contains 15 marbles, 5 of which are green. Bag Q contains 30 marbles, 15 of which are blue. If one marble is drawn at random from each bag, what is the probability that the marble from bag P is green and that the one from bag Q is blue?
probability that the marble from bag P is green = 5/15 = 1/3
probability that the marble from bag Q is blue = 15/30 = 1/2
probability that the marble from bag P is green AND that the one from bag Q is blue = 1/3 * 1*2 = 1/6