Question

Let A and B stand for either black or red (so that AB can be any of the four combinations). Show that the probability of A at the nth drawing, given that the m-th drawing yields B, is the same as the probability of A at the m-th drawing when the nth drawing yields B.​

Answer 1

the probabilities for the ball drawn with the left hand should be the same ... are red. The sample space can be taken to be the set of all pairs (a, b