两人都去某风景区游玩,每天某一时段开往该风景区有三辆汽车(票价相同),但是他们不知道这些车的舒适程度,也不知道汽车开过来的顺序,两人采用了不同的乘车方案:甲无论如何总是上开来的第一辆车,而乙则是先观察后上车,当第一辆车开来时,他不上车,而是 Both of them went to a scenic area, and there were three cars (the same fare) bound for the scenic area at a certain time of day, but they did not know the comfort level of these cars nor did they know the order in which the cars came. They adopted Different car programs: A car is always the first car in any case, and B is the first observation after the car, when the first car came, he did not get on the train, but