Below are three boxes containing black and white balls. The number of each color is noted inside the box. Draw a ball from box 1 and place it in box 2. Then draw a ball from box 2 and place it in box 3. Finally draw a ball from box 3. Box 1 Box 2 Box 3 3 white 4 white 3 white 2 black 2 black 0 black a) What is the probability that the last ball, drawn from box 3, is white? (Type a simplified fraction.) b) What is the probability that the last ball drawn is black? (Type a simplified fraction.)