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Hard · Game Theory & Logic · Quant Trader interview question · game-theory, logic, rationality
Five rational pirates, A, B, C, D, and E (ordered from oldest to youngest), have 100 gold coins to divide. According to pirate custom, the oldest pirate (A) proposes a distribution. All pirates, including A, then vote on the proposal. If the proposal receives at least 50% of the votes (including A's vote if they vote in favor), the coins are distributed accordingly. Otherwise, pirate A is thrown overboard, and the process repeats with the remaining pirates. The pirates are perfectly rational, gr