This question was previously asked in

ACC 121 CGAT Paper (Held in Aug 2019)

Option 1 : Aryabhata

The correct answer is __ Aryabhatta__.

__Key Points__

**Aryabhata****He was the first of the great astronomers of the classical age of India.**- He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna).
**Aryabhata gave the world the digit "0" (zero) for which he became immortal. Hence, Option 1 is correct.****His book, the Aryabhatiya, presented astronomical and mathematical theories**in which the Earth was taken to be spinning on its axis and the periods of the planets were given concerning the sun (in other words, it was heliocentric).- This book is divided into four chapters: the astronomical constants and the sine table mathematics required for computations division of time and rules for computing the longitudes of planets using eccentrics and epicycles the armillary sphere, rules relating to problems of trigonometry, and the computation of eclipses.

__Additional Information__

**Srinivasa Ramanujan**- He was an Indian mathematician who lived during the British Rule in India.
- Though he had almost no formal training in pure mathematics, he made substantial contributions to mathematics.

**Paṇini**- He was a Sanskrit philologist, grammarian, and revered scholar in ancient India, variously dated between the 6th and 4th centuries BCE.

**Varahamihira**- He is one of the principal astronomers of ancient India and is one of the nine jewels in the court of Vikramaditya, the strong emperor of ancient India.
- This greatest astrologer of India perhaps was born in 504 in Ujjain and had led a prosperous life and living.