Math Jokes

Joke: A mathematician sees three people go into a building. Later he sees four people leave. When he is asked how many people are in the building he replies, "Well, if one person entered the house it would be empty."

Joke: Girlfriend: What are you doing?
Mathematician: Just wrestling with these unknowns in bed.
Girlfriend: What?!
Mathematician: Yeah. Just a minute ago I was working out some models.
*Hangs up*
Mathematician: Oh you thought... Hello?

Joke: Why is the tan function so quick to differentiate?

Joke: What do you get if you divide the circumference of a jack-o-lantern by its diameter?

Joke: x² asks x³ if he believes in God.

x³ replies, "Well, I believe in higher powers."