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“三扇门”概率问题流传已久:一档娱乐节目,最后环节在嘉宾面前呈现三扇门,只有一扇门后面有汽车,嘉宾若猜中即开走.嘉宾任选一扇门后,主持人从剩下的两扇门中打开一扇后面无车的空门(主持人知道哪扇门后面有车,特意打开空门),此时主持人再问嘉宾:“现在,只有两扇门了,请问你要不要换一扇门?”换,还是不换?哪种情形猜中汽车的可能性更大?这个问题1991年1月在美国《检阅》杂志发表时,曾引来从小学生到大学教授的上万封来信讨论,连正在打海湾战争的美国参谋喝咖啡时也
Probability problem has been circulating for a long time: an entertainment program, the last link presents three doors in front of the guests, there is only one behind the door of the car, guests guessed that is away. Guests choose a door After the host opened the door from the remaining two car-free empty door (the host knows which door behind the car, deliberately open the empty door), then the host asked the guests: “Now, only two Do you want to change the door? ”“ For change or not? What kind of situation is more likely to guess the car? This question in January 1991 in the United States ”Review" magazine was published, cited Tens of thousands of letters from schoolchildren and university professors came to discuss the issue. Even the U.S. staff members who are fighting the Gulf War are drinking coffee.