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Simple Math Problems To Fool The Best

A journey back in time to elite, Soviet math preparation schools. In case you want more: http://www.3038.org/press/shen.pdf http://www.tanyakhovanova.com/Coffins/coffinsmain.html https://arxiv.org/pdf/1110.1556.pdf http://www.lix.polytechnique.fr/Labo/Ilan.Vardi/mekh-mat.html
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