There are four types of market structures namely; perfect competition, monopoly, monopolistic competition and oligopoly. Perfect competition is where large number of small firms compete with each other with a homogeneous product. In a monopoly market there is only one producer of a given product who determines the price of the product. In monopolistic competition the market combines the aspect of monopoly and perfect competition. In this case, In Oligopoly there are a few suppliers or sellers of a particular product.