疯子问题模拟实验：100人按号登机，第一个上来一个疯子随机坐下，乘客登机后若座位被占则随机坐下，问第100人坐在100号的概率？-The question of a mad man:100 people get on a plane in the right of their ticket, the first person is a mad man who take a seat randomly. The following passages will take a seat randoml