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    Exam 7: Efficiency, Exchange, and the Invisible Hand in Action
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    In a Perfectly Competitive Industry Over the Long Run
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In a Perfectly Competitive Industry Over the Long Run

Question 8

Question 8

Multiple Choice

In a perfectly competitive industry over the long run:


A) economic profits tend to persist.
B) the number of firms in an industry grows.
C) economic losses tend to persist.
D) economic profits and losses are driven towards zero by entry and exit.

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