Fastest Time To Subtract Two 70-Digit Numbers By Memory

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Trichy, Tamil Nadu, India / June 26, 2014

Praveen Spirals subtracted two 70-digit numbers in 55.31 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: wildcardfastestpeoplenumbermathdigitsubtraction

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