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When I was a kid, I loved the Mathemagic book [1] IIRC this was one of the tricks described in the book. [1] https://www.amazon.com/Mathemagic-Raymond-Blum/dp/
by localhost 5y ago
When I was a kid, I loved the Mathemagic book [1] IIRC this was one of the tricks described in the book.
[1] https://www.amazon.com/Mathemagic-Raymond-Blum/dp/0806983558 https://www.amazon.com/Mathemagic-Raymond-Blum/dp/0806983558