Fill in the blanks: a. __ was a great astronomer. b. Stories about gods and goddesses are found in the ___ c. ___ is recognised as the author of the Sanskrit Ramayana. d. __ and _____ are two Tamil epics.
(a) Aryabhata (b) Purana (c) Valmiki (d) Silappadikaram, Manimekalai
