noted and a cube of the other colour is then added to the box. A second cube is then drawn.
(a) If both cubes are of the same colour, what is the probability that both cubes were in
fact white?
(b) The first ball is replaced before the second ball is added to the box.
please list the calculation and steps thanks
更新1:
sorry :P missed should be:What is the probability that both cubes were white given that both cubes were of the same colour?
更新2:
question one answer is 5/7 and second answer is 9/13, just for you guys to refer, thanks