can you do the hardest problem from the European Mathematical Cup??
19:14
The strange cousin of the complex numbers -- the dual numbers.
27:12
Could you pass the very first SAT exam? Insanely difficult standardized test
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a very tricky Diophantine equation
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When Proof By Induction Fails
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Integration Is Easy, Actually
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2025 MIT Integration Bee - Regular Season
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topology can make distance weird...
30:31