These 38 Basic Math Problems Look Easy, Until You Try To Solve Them – Test Yourself

Let’s keep things simple - this is basic math. Nothing scary. Just everyday calculations, a bit of geometry, some number patterns, and the kind of stuff you definitely learned in school at some point.
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Chinese scientists push limits of 300-year-old math problem in sphere packing

Scientists at Fudan University, Peking University, and the Shanghai Academy of AI for Science ...