The problems faced by oligopolies with three or more members are entirely different from the problems faced by duopolies

When a game has multiple equilibria, a useful method to sort out which one would be the "best" prediction is to

a. find the one (if any) in which both players are better off than in any other equilibrium. b. find the equilibrium that is symmetric, if any. c. find the one which seems "focal", if any. d. all of the above.

One necessary step in demonstrating monopolistic behavior is to define the market. In this process, defendants would:

a. claim that the market was not in equilibrium. b. want the market defined as narrowly as possible. c. deny that a market existed. d. assert that the market was not stable. e. want the market defined as broadly as possible.