三老翁一起在湖边垂钓。晚归前,各自数清了所钓的鱼数。甲对乙说:“如果你的鱼给我一条,我的鱼数就是你的一倍。”乙风趣地说:“还是你给我一条为好,这样咱俩的鱼数就相等了。”丙却笑着说:“最好还是你们二人各给我一条鱼,使我的鱼数恰好是咱们三人今天钓鱼的平均数。”请猜三 Three old man fishing at the lake. Before late return, count the number of fish they catch. A said to B: “If your fish give me one, my fish is double your number.” B said humorously: “Or you give me a good, so that the two of us have the same number of fish.” C smiled and said: “It would be best if both of you gave me a fish, so that my number of fish is exactly the average of the three of us fishing today.” Please guess three