A box contains 4 red and 6 blue balls. Another box contains 4 blue and 6 green balls. A ball is taken out from each box. Find the probability of one ball being red and the other green.
Consider an experiment of drawing two cards at random from a pack of cards without replacement
Case i: Event A is successful
Case ii: Event A is unsuccessful
The over all probability is the sum of the probabilities in the two cases
Let us modify the same experiment from "without replacement" of cards to with replacement of cards.
But are A and B exclusive events?