Dear Members I am very bad at probability, so please I hope I can find help here. My problem is that I can't see how to use n and m in this problem
Suppose a coin-flipping game between two players, A and B. The probability that the coin lands heads up is p (0<p<1). In case a head appears, player A gets one point and player B loses one point. In case a tail appears, player B gets one point and player A loses one point. When either one of the players lose all their points, the game ends and the player having points becomes the winner. When the initial points of A and B are m and n respectively, calculate the probability that player A wins. Note that m and n are positive integers.