probabilityWin is an adaptation of Problem 8.1.12 in Introduction to The Design and Analysis of Algorithms. probabilityWin is a function that, given three (3) integer values (a, b, and n), will return the probability that Team A will win n games before Team B given that Team A has already won a games and Team B has already won b games. You may assume that the probability of winning a single game is 50% for either team. For example, with n = 4, a = 3, and b = 1, the probability returned would be 0.875. Can you help me figure how to calculate probability on this?