The ancient Greeks did not use zero as a number, because they thought numbers represented shapes: To the [ancient] Greeks, who looked upon mathematics from a geometric perspective, zero seemed absurd or unnecessary. When numbers or unknowns represented lengths, and squares represented areas, zero had no place. Why solve a problem that did not exist? If a length is zero, there is no line; if an area is zero, there is no object.The idea of zero was first thought about in Babylon, India and in Central America at different times. Some places and countries did not know about zero, which may have made it harder for those people to do mathematics. For example, the year after 1 BC is AD 1 (there is no year zero). In India, zero was theorized in the seventh century by the Mathematician Aryabhata.
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