# Which Indian Mathematician Invented Decimal Place Value?

- Bhaskar
- Varahmihira
- Brahmagupta
- Aryabhatta

**Option 4 is the right answer.**

Aryabhata was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the Aryabhaṭiya (499 CE, when he was 23 years old) and the Arya-siddhanta.

Aryabhata’s major work in science and math are following

Invention of zero

Place value system

Sidereal rotation of Earth

Sidereal Year

Algebra

Trigonometry

Value of Pi ( π )