Job Recruitment Website - Zhaopincom - A person who wants to recruit an assistant brings A and B who have come to apply into the office, shows two red hats and three black hats, and then turns off the light. A, B and Shang.

A person who wants to recruit an assistant brings A and B who have come to apply into the office, shows two red hats and three black hats, and then turns off the light. A, B and Shang.

Only two red hats. If someone in AB wears a red hat, the other party will soon know that he is a black hat, but after a while, that is, no one wears a red hat, it can only be black.

There is also a topic on the Internet about a village where suicide can ascend to heaven, which is very helpful for cultivating logic.