3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their
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![3道gmat 数学概率排列组合题 1.On a certain transatlantic crossing,20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.If 60 percent of the passengers with round-trip tickets did not take their](/uploads/image/z/10375611-51-1.jpg?t=3%E9%81%93gmat+%E6%95%B0%E5%AD%A6%E6%A6%82%E7%8E%87%E6%8E%92%E5%88%97%E7%BB%84%E5%90%88%E9%A2%98+1.On+a+certain+transatlantic+crossing%2C20+percent+of+a+ship%E2%80%99s+passengers+held+round-trip+tickets+and+also+took+their+cars+abroad+the+ship.If+60+percent+of+the+passengers+with+round-trip+tickets+did+not+take+their)
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