Fastest Time To Subtract Two 80-Digit Numbers By Memory

United States Praveen Spirals

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Trichy, Tamil Nadu, India / June 26, 2014

Praveen Spirals subtracted two 80-digit numbers in one minute, 15.80 seconds using only his memory.

- 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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