HISTORIANS of mathematics attribute the first use of the cross x as a symbol for multiplication to William Oughtred (“Clavis Mathematicae”, London, 1631). See W. W. R. Ball's “Short Account of the ...
What are the best Minecraft enchantments? There are a lot of Minecraft enchantments to get to grips with, but they're essential to making the most out of your tools and weapons. They're also expensive ...
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