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0 (zero) is a number representing an empty quantity. The meaning of zero is the arithmetical symbol 0 or [symbol] denoting the absence of all magnitude or quantity. Zero is the integer denoted 0 that, when used as a counting number, means that no objects are present. It is the only integer … While mathematicians all accept zero as a number, some non-mathematicians would say that zero is not a number, arguing … Adding (or subtracting) 0 to any number leaves that number unchanged; Get the definition and interesting zero facts and learn about its history and role … · learn about the number zero.