A new guy starts working at the local mental asylum.
After giving him some general indications, the director tells him to ask any question he may have.
-Yes, director, I have one. How do we know if a patient is cured and ready to leave the asylum?
-Well, says the director，once per year, we gather some of them and ask them a question. If they answer it correctly, then they are cured and are free to go.
The director gathers three patients for a demonstration.
-So, resident 121, what is six times six?
-One thousand? says the first one.
-Well no, that’s another year here for you.
The director proceeds to ask the second patient the same question.
-Well, the answer is February.
-My God… No, no it isn’t. You’re staying here one more year.
Finally, the director asks the question to the third patient.
-What is six times six?
-Obviously it 36.
The director cheers the third patient and proceeds to comunicate the asylum staff he’s ready to leave. The new guy asks the patient before he leaves:
-Good job answering correctly. How did you know it?
-Well, it was easy. I divided one thousand by February..