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PERFECT COMPETITION: An ideal market structure characterized by a large number of small firms, identical products sold by all firms, freedom of entry into and exit out of the industry, and perfect knowledge of prices and technology. This is one of four basic market structures. The other three are monopoly, oligopoly, and monopolistic competition. Perfect competition is an idealized market structure that's not observed in the real world. While unrealistic, it does provide an excellent benchmark that can be used to analyze real world market structures. In particular, perfect competition efficiently allocates resources.
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MARGINAL COST AND LAW OF DIMINISHING MARGINAL RETURNS Decreasing then increasing marginal cost, reflected by a U-shaped marginal cost curve, is the result of increasing then decreasing marginal returns. In particular the decreasing marginal returns is caused by the law of diminishing marginal returns. As such, the law of diminishing marginal returns affects not only the short-run production of a firm but also the cost of short-run production. This translates into a positively-sloped supply curve for profit-maximizing competitive firms.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time surfing the Internet seeking to buy either a birthday gift for your grandmother or a T-shirt commemorating yesterday. Be on the lookout for malfunctioning pocket calculators.
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This isn't me! What am I?
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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"The time your game is most vulnerable is when you're ahead; never let up. " -- Rod Laver, Tennis player
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G-10
Group of Ten
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