There can be ten people in the elevator, and you happen to be the tenth. When you go in, the elevator is overweight, so you get out. When the door closes, you suddenly

Answer 1: The key point of the problem is that the elevator can take at most 10 people, and you happen to be that 10. When you walk into the elevator, you are overweight (indicating that you are that 1 1), indicating that there are 9 people in the elevator. Where do you think the other person can't see? Where is it hidden? Is it scary?

Answer 2: (as a cold joke) the head is caught in the elevator door (this sentence describes whether a person calls the police when he is abnormal has nothing to do with the elevator and the complex, that is, his head is caught in the door)

Answer 3: (According to the hint in the question, only nine people were seen in summer) He suddenly thought that someone had heatstroke, fell at the feet of these nine people and called the police decisively.

Answer 4: The hints of 1, 2, 3, 4, 5 and 6 in the topic content have indicated that there are no special circumstances such as normal elevators and normal personnel. So friends with high IQ don't bother to guess, save your brain.

The key sentence in the article is that after the elevator door closed, I suddenly thought of a terrible thing. It means that after the elevator door was closed, the man suddenly thought of something unrelated to the elevator. It's like you usually forget where you put your keys and suddenly remember them. The answer is that simple.