Six cities A,B,C,D,E, and F are located on the vertices of a regular hexagon in that order. G is the center of the hexagon. The sides of the hexagon are the roads connecting these cities. Further more, there are roads connecting cities B,C,E,F and G, respectively. Because of raining, one or more roads maybe destroyed. The probability of the road keeping undestroyed between two consecutive cities is p. Determine the probability of the road between cities A and D is undestroyed. probabilitysymmetrygraph theoryprobability and statsIMO ShortlistIMO Longlist