What other symbols were used to represent zero before it was fully developed as a number? - Quora

Answer: Answer - Before the concept of zero as a number was fully developed, various symbols were used to represent the concept of nothingness or absence. In ancient Greek mathematics, the letter "O" was sometimes used as a placeholder, as well as the letter "Θ," which stands for theta. In ancien

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Who invented the concept of zero as a number? - Quora

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Who invented the concept of zero as a number? - Quora

Which number was invented first - zero or one? - Quora