Question: what are the 5 characteristics of an oligopoly?
Answer: Interdependence: The foremost characteristic of oligopoly is interdependence of the various firms in the decision making. ... 
Advertising: ... 
Group Behaviour: ... 
Competition: ... 
Barriers to Entry of Firms: ... 
Lack of Uniformity: ... 
Existence of Price Rigidity: ... 
No Unique Pattern of Pricing Behaviour: