Consider the following "location game." There are two ice cream sellers (Seller 1 and Seller 2) in a small city. Residents are uniformly located on a straight street of length 1. The ice cream sellers need to choose where to set up their carts, and each resident will purchase one unit of ice cream from the nearest seller. The city council has fixed the price of the ice cream, and as a result, each seller just wants sell as much ice cream as possible. (a) We think of this "location game" as a simultaneous-move game, in which each player's payoff is the proportion of residents that buy from her cart. Is this game with discrete strategies or continuous strategies? Please state the set of (pure) strategies for both sellers. Is this game zero-sum or non-zero-sum? (b) Find all NE(s) of this game. (c) Is there an alternative pair of locations for the sellers such that the residents' total walking distance is reduced but neither seller is hurt? Is it an NE? (d) Suppose now that there are three ice cream sellers. Is there still an NE (in pure strategies)? If yes, please find it. If no, please explain why. 1