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Fastest Time To Subtract Two 80-Digit Numbers By Memory

United States

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Rockville, Maryland, United States / August 21, 2015

Doron T. subtracted two 80-digit numbers in one minute, 4.50 seconds using only his memory.

DENIED: Lacks sufficient evidence.

- must pick numbers at random
- subtrahend must be higher than the minuend
- must provide video evidence

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Tags: wildcardfastestpeoplenumbermathmemorydigitsubtraction

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