What is the second partial product of 564x307

Which of the following is not a subset of {1,2,3}?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

[tex]5 \times1 \frac{12}{13} [/tex] me