Question

कल्याणकारी अर्थशास्त्र हि कोणत्या समस्या
हाताळणाऱ्या अर्थशास्त्राची शाखा आहे?
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Answer 1

Answer:

The first recorded zero appeared in Mesopotamia around 3 B.C. The Mayans invented it independently circa 4 A.D. It was later devised in India in the mid-fifth century, spread to Cambodia near the end of the seventh century, and into China and the Islamic countries at the end of the eighth.