Oligopoly Relatively few firms, usually less than 10 Duopoly -two firms Triopoly -three firms The products firms offer can be either differentiated or homogeneous Michael R Baye, Managerial Economics and Business Strategy, 3e. CThe McGraw-Hill Companies, Inc, 1999Michael R. Baye, Managerial Economics and Business Strategy, 3e. ©The McGraw-Hill Companies, Inc. , 1999 Oligopoly • Relatively few firms, usually less than 10.  Duopoly - two firms  Triopoly - three firms • The products firms offer can be either differentiated or homogeneous