Russian Teacher Tricks Americans With Impossible Problem

The famous mathematician Vladimir Arnold mischievously shared a puzzle that he joking said American students could find an answer but Russian students could not calculate the same number. Why? Special thanks this month to: Lee Redden, Mike Robertson, Daniel Lewis, Kyle. Thanks to all supporters on Patreon and YouTube!
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Svetlana Tretyakova (Светлана Третьякова), CC BY-SA 3.0
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