The decimal numeral system (also called base 10 or occasionally denary) has ten as its base. It is the numerical base most widely used by modern civilizations.[1] Decimal notation often refers to a base 10 positional notation such as the Hindu-Arabic numeral system or rod calculus;[2] however, it can also be used more generally to refer to non-positional systems such as Roman or Chinese numerals which are also based on powers of ten.

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