Dr. Dhirendra Kumar Dalai did M.Sc in 1981 and M.Phil in 1983 from Utkal University, Vani Vihar, Bhubaneswar, Orissa. He obtained Ph.D. degree in 2001 from Utkal University. Presently he is working in the Department of Mathematics, Sailabala Women’s College, Cuttak, Orissa. He has teaching experience of more than 24 years in UG and PG Classes. He has Authored text books for +2 students of Orissa viz. Foundation of Mathematics-I, II.