mental calculator

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Mental calculators (top level) Arthur T. Benjamin George Bidder (mental calculator) Willem Bouman (mental calculator) Ireneo Bughao Jedediah Buxton Zerah Colburn (mental calculator) Daniel Tammet Zacharias Dase Paul Erdős Leonhard Euler Carl Friedrich Gauß Jacques Inaudi Henri Mondeux Ferenc Pataki (mental calculator) Kim Peek Srinivasa Ramanujan Jacow Trachtenberg

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