Maximum addition and subtraction problems of 10 digits solved in 15 minutes
The record for solving the maximum number of addition and subtraction problems of 10 digits in 15 minutes was set by Vihaan Bhambhani (born on November 26, 2004) of Pitam Pura, New Delhi. He correctly added and subtracted 12 problems in 15 minutes (each problem comprising 10 digits and 10 rows) at the age of 17 years, 3 months and 29 days, as confirmed on March 25, 2022.