Probabilty

Suppose that a box contains 2 black balls, 1 red ball, and 4 green balls. Two balls are chosen, without replacement, from the box. That is, the rst ball is chosen and its colour is recorded. It is not returned to the box. Then, the second ball is chosen. Assume that all balls are equally likely to be chosen. a) Draw a tree diagram to show the possible outcomes b) Find the probability of the same colour is dram twice c) Find the probability a black ball and a red ball are drawn \"5 marks]