智力快车
三位旅行者误入一片丛林，被食人族抓获。食人族给了他们一个逃生的机会。他们把这三个人绑在木桩上排成一条线，最后面的人能看到前面两个人的背部，中间的人只能看到他前面那个人的背部，而最前面的人谁也看不到。然后给这三个人看了五顶帽子，三顶黑色的。两顶白色的。
接着，食人族把这三个人的眼睛蒙上，在他们每个人头上放了一顶帽子。藏起剩余的两顶帽子，然后把蒙着这三个人眼睛的布条松开，告诉他们只要一个人猜出自己头上戴的是什么颜色的帽子，他们就都可以走。而如果猜错了，他们三人都将被处死。时间一分分过去，最后，最前面的那个谁也看不到的人正确地猜出了自己帽子的颜色。请问他戴的是什么颜色的帽子?他是怎么猜到的?
Answer：
The back man could see the hats wornby the two men in front of him.So.if both ofthose hats were white.he would know that thehat he wore was black.But.since he didn’tanswer.he must have seen at least One blackhat ahead of him.
After it became apparent to the middleman that the back man couldn't figure outwhat he's wearing.he knew that there was atleast one black hat worn by himself and thefront man.
Knowing this，if the middle man saw awhite hat in front of him.he'd know that his own hat was black.and could answer the question correctly.But，since he didn't answer，he must have seen a black hat on the frontman.
After it became apparent to the front man that neither of the men behind him could answer the question.he realized the middle man saw a black hat in front of him.So he Said，也correctly，“My hat is black.”, 百拇医药(高素菊)
接着，食人族把这三个人的眼睛蒙上，在他们每个人头上放了一顶帽子。藏起剩余的两顶帽子，然后把蒙着这三个人眼睛的布条松开，告诉他们只要一个人猜出自己头上戴的是什么颜色的帽子，他们就都可以走。而如果猜错了，他们三人都将被处死。时间一分分过去，最后，最前面的那个谁也看不到的人正确地猜出了自己帽子的颜色。请问他戴的是什么颜色的帽子?他是怎么猜到的?
Answer：
The back man could see the hats wornby the two men in front of him.So.if both ofthose hats were white.he would know that thehat he wore was black.But.since he didn’tanswer.he must have seen at least One blackhat ahead of him.
After it became apparent to the middleman that the back man couldn't figure outwhat he's wearing.he knew that there was atleast one black hat worn by himself and thefront man.
Knowing this，if the middle man saw awhite hat in front of him.he'd know that his own hat was black.and could answer the question correctly.But，since he didn't answer，he must have seen a black hat on the frontman.
After it became apparent to the front man that neither of the men behind him could answer the question.he realized the middle man saw a black hat in front of him.So he Said，也correctly，“My hat is black.”, 百拇医药(高素菊)