A and B play a series of games. Each game is independently won by A with probability of 0.4 and by B with a probability of 0.6.
(a) They stop when the total number of wins of one of the players is 2 greater than that of the other. The player with the larger number of total wins is the match winner.
(ii) what is the probability that A is the match winner?
please help! Thanks! ^^