Doctor at a mental hospital gathered three patients and told them:
“Listen guys, whoever tells me what the result of four multiplied by six is, will be released from the hospital.”
The first one thought, and thought and finally said:
“Tuesday.”
The second one thought even longer:
“146.”
And the third one without any hesitation said:
“24.”
The doctor shocked:
“Bravo Peter, how did you know?”
“Elementary! I just divided Tuesday by 146 …”

In the Nuthouse.
“Doctor, … I write letters to myself.”
“And when did you do it last?”
“Yesterday.”
“Well … what did you write?”
“I do not know, I have not received it yet…”