A mathematician and his best friend, an engineer, attend a public lecture on geometry in thirteen-dimensional space.
"How did you like it?" the mathematician wants to know after the talk.
"My head's spinning," the engineer confesses.
"How can you develop any intuition for thirteen-dimensional space?"
"Well, it's not even difficult.
All I do is visualize the situation in n-dimensional space and then set n = 13." 
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What did one math book say to the other math book?
"I don't know about you man, but I got a lot of problems!"
My math teacher called me average...
How mean!
Chuck Norris can count the number of corners in a circle.
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Two statisticians go bird hunting.
The first one fires at the bird but overshoots by 5 feet.
The second one fires and undershoots the bird by 5 feet.
They both give each other a high-five and say "Got it!"
Three statisticians are out hunting.
Suddenly, a deer appears 50 yards away.
The first statistician shoots and hits the tree 5 feet to the left.
The second statistician shoots and hits the tree 5 feet to the right.
The third statistician starts jumping up and down, yelling "We got him! We got him!"
Chuck Norris knows the last number of infinity.
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There are three kinds of accountants in the world.
Those who can count and those who can't.
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What do accountants suffer from that ordinary people don't?
Depreciation.
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Q: Why couldn't the blonde write the number eleven?
A: She didn't know what one came first.