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Vectors and Trigonometry

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Mathematics is the most important tool of science. The quest to understand the world and the universe using mathematics is as old as civilisation, and has led to the science and technology of today. Learn about the techniques and history of mathematics on


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Question: How many ways are there of arranging x books on a shelf where the order is important?

Go to the article about: Permutations and Combinations

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Wall Street indices predicted nine out of the last five recessions!

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