Two bags contain coloured cubes. Bag 1 has 2 green cubes and 1 yellow cube. Bag 2 has 3 green cubes and 1 yellow cube. Determine each probability if you choose 2 cubes from Bag 1 without returning the first cube and 1 cube from Bag 2. Use a visual model to show your thinking. a) All three cubes are the same colour. b) Exactly two cubes are the same colour. c) All three cubes are different colours.