Which expression represents the determinant of the image provided? det(a) = (–4)(–7) – (–6)(–2) det(a) = (–4)(–7) + (–6)(–2) det(a) = (–6)(–2) – (–4)(–7) det(a) = (–6)(–2) + (–4)(–7)

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?