Youngest to solve addition and subtraction sums of two-digit numbers
The record for being the youngest to solve addition and subtraction sums of two-digit numbers was set by Dhanvin Dibin (born on December 6, 2016) of Calicut, Kerala. He solved 5 sums (consisting of a set of 30 numbers) at the age of 5 years, 3 months and 8 days, as confirmed on March 14, 2022.