Fastest human calculator

According to Official Guinness Records,

Scott Flansburg of Phoenix, Arizona, USA, correctly added a randomly selected two-digit number (38) to itself 36 times in 15 seconds without the use of a calculator on 27 April 2000 on the set of Guinness World Records in Wembley, UK.

For a complete list of 2000 records, please visit 2000 Guinness Records in United Kingdom.

Please choose a country from the list for relevant records:

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Content last updated on 2018-11-27