A new guy starts working at the local mental asylum. After giving him some general instructions, 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, 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 are staying here one more year.
Finally, the director asks the question to the third patient.
What is six times six?
Obviously it’s 36.
The director cheers the third patient and proceeds to tell the asylum staff he is 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.