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PERFECT COMPETITION AND EFFICIENCY: Perfect competition is the idealized market structure that achieves an efficient allocation of resources. The conditions of perfect competition, including (1) large number of small firms, (2) identical products sold by all firms, (3) freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology, ensure that perfect competition efficiently allocates resources. This is in fact the purpose of perfect competition: a market structure that illustrates perfection, the best of all possible resource allocation worlds. The real world falls short of this perfection.

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FOURTH RULE OF COMPETITION

The fourth of seven basic rules of the economy, stating that competition among market buyers and sellers generates an efficient allocation of resources. Competition depends on the relative number of buyers and sellers. The side of the market with fewer numbers generally has relatively less competition and more market control.

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