FASTEST TIME TO SOLVED CUBIC ROOTS

Sri.Vendra.Rama Krishna, from Iragavaram, W.G.Dt., A.P,India. is working in Vignam High School, Huzur Nagar, Nalgonda District, Telangana State, India was attempted a Fastest Mathematical calumniations event of ‘ SOLVED CUBIC ROOTS’ up to 2 Crores 70 Lakhs within shortest time without using calculator and logarithm table book.This event has been placed in Telugu Book of Records.