An astronomer, a physicist and a mathematician are on a train in Scotland. The astronomer looks out of the window, sees a black sheep standing in a field, and remarks, "How odd. Scottish sheep are black." "No, no, no!" says the physicist. "Only some Scottish sheep are black." The mathematician rolls his eyes at his companions' muddled thinking and says, "In Scotland, there is at least one field, containing at least one sheep, at least one side of which appears black from here."

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What is 6.9? A great thing ruined by a period.

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A math teacher asks a pupil, what are 3, 5, 7 and 11? The pupil thinks for a moment and then replies, "On 3 there is cartoon network, on 5 we have cartoon network, on 7 dad checks out news-bulletin and the channel that comes by pressing 11 on the remote is FTV, which my brother watches late at night."

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Teacher: "Now class, whatever I ask, I want you to all answer at once. How much is six plus four?" Class: "At once!"

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Mathematics is made of 50 percent formulas, 50 percent proofs, and 50 percent imagination.

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