Maximum cube roots calculated manually and written by a teen in one minute
The record for calculating manually and writing the maximum number of cube roots in one minute was set by Anaet Mariya Noble (born on October 10, 2011) of Idukki, Kerala. She calculated manually and wrote 25 cube roots of seven-to-nine-digit numbers in one minute (under the guidance of VMAT Academy, Bengaluru), using a pen, at the age of 13 years, 4 months and 10 days, as confirmed on February 20, 2025.
