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A comment on Ask HN: Can engineers from Google or Facebook solve whiteboard questions easily?. Parent comment

Re:Ask HN: Can engineers from Google or Facebook solve white... by netgusto on Tuesday August 14, 2018 @10:35AM (#17758299)
Not an unsolved problem, but allegedly a new solution: The Gauss sum of integers from 1 to 100.

https://www.nctm.org/Publications/Teaching-Children-Mathemat...

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