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Did you know?
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.