Hmm, I need to pitch in a few. Might have them off a bit, since I'm going mostly from memory.
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A mathematician, an engineer, and a statistician are asked to find the length of the hypotenuse if the other side lengths are 3 and 4 metres long.
The mathematician pauses for a second and says, "Why, that's a Pythagorean triple! The hypotenuse is five metres long."
The engineer pulls out a book listing triangle side lengths and leafs through it with precision. Unfortunately, the relevant page is stained with coffee and is illegible. After several minutes of thought, the engineer declares that the question is impossible and walks out.
The statistician checks to see that the door is closed, leans forward, and asks "Well, what do
you want the answer to be?"
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A salesman's car breaks down in the middle of a harsh storm. Fortunately, he spots a farmer's house not far away. When he arrives, the farmer says, "Fortunately for you, my three beautiful daughters are away at college, so you can sleep in their room for the night."
Without a word, the salesman turns around and begins walking back to his broken car. "But why are you leaving?" asks the farmer, "I have a room for you!"
The salesman turns around and says "I think I'm in the wrong joke."
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Two tellers are working at a bank when robbers break in and tell people to give them their wallets.
The first teller passes the other $50. "What's this?" asks the second teller.
"It's the fifty bucks I owe you."
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A man's father accurately predicts, to the nearest hour, the time and place of his death. How is this possible?