News & Guides
Season guides, division explainers and the latest on the National Economics Challenge and the China National Round (CNEC).
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How NEC Tests Monopoly & Oligopoly Pricing: MR=MC, Markups and Collusion Logic
How the National Economics Challenge tests pricing under monopoly and oligopoly: the MR=MC rule, the markup over marginal cost, price discrimination, and why collusion is always tempting but unstable.