11-year-old Risheek Nandgopal Kulkarni set 6 records in his home on 5 Dec 2021. Within 5 min, he managed to calculate mentally 56 squares of 2-digit numbers*. For roots, he managed 100 squares roots, 100 cube roots, 64 fifth roots, 48 seventh roots, 21 tenth roots, each of these tests achieved in 5 min. The roots tested were confined to 2-digit answers. Risheek attends Middleton International School.