RAPID ADDITION & SUBTRACTION OF SINGLE DIGIT NUMBERS BY A CHILD

Daksh Sachin Baid (born on August 17, 2011) of Gujarat, India, set a record for performing rapid addition & subtraction of single digit numbers i.e., up to 250. He can perform quick addition and subtraction up to 250 numbers flashing on the screen with a speed of 0.4 seconds, as confirmed on August 22, 2020.