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Zero
Тhe concept of zero itself has its origins since time immemorial. And its history spans thousands of miles apart. First, it was the Babylonians who used zero, not just as a placeholder, but also to demonstrate the lack of one column of another number such as in the year 2018. This milestone happened when they adopted the counting system of the Sumerians at around 300 B.C. Second, thousands of miles away at around A.D 350, the Mayans used zero as a placeholder, too. However, like their Babylonian counterpart, they did not imagine zero as a number nor used it in mathematical equations.
