A: E Block, Central Secretariat, New Delhi, Delhi, India
In Chandaḥśāstra (also Chandaḥsūtra), the earliest known Sanskrit treatise on prosody, “Pingala presented the first known description of a binary numeral system. He described the binary numeral system in connection with the listing of Vedic meters with short and long syllables. His work also contains the basic ideas of maatraameru (Fibonacci number) and meruprastaara (Pascal’s triangle.)”