6. A bag contains 5 red balls and 8 yellow balls. Layla picks a ball at random from the bag. Without replacing the ball she picked she now picks a

second ball. a)Draw a probability tree diagram to show the possible outcomes. b) Find the probability that she picks two red balls. c) Find the probability that she picks a red ball and a yellow ball in any order (i.e. she picks red then yellow OR yellow then red).