RAPID ADDITION & SUBTRACTION OF SINGLE DIGIT NUMBERS BY A CHILD

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The record for performing rapid addition & subtraction of 500 numbers was set by Rishi Pandey (born on May 24, 2013) of Delhi. He can perform quick addition and subtraction of 500 single digit numbers, flashing on the screen with a speed of 0.3 seconds, at the young age of 7 years, 4 months and 24 days, as confirmed on October 20, 2020.