Human Calculator
The record for being a Human Calculator was set by Amit Sawlani (born on June 21, 1998) of Indore, Madhya Pradesh. He did multiple onerous and abstruse calculations accurately in the least time. He calculated the table of any 2-digit number in the least time of 3.16 seconds, table of any 3-digit number in 3.78 seconds and simultaneous tables of 25 different 2-digit numbers in 2 minutes, 54 seconds, and 15 milliseconds, faster than a calculator, at the Indian Institute of Management, Amritsar, Punjab on November 13, 2021.