(3) N.S. Reddy served as the sixth President of India from 1977 to 1982. Gyani Zail Singh served as the seventh President of India from 1982 to 1987. R. Venkataraman served as the eighth President of India from 1987 to 1992. Dr. Shankar Dayal Sharma served as the ninth President of India from 1992 to 1997.