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# What are the different types of number systems?

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The Hindu-Arabic, Roman and Chinese number systems are three of the commonly used numeral systems in modern times. Other counting systems that were developed by ancient civilizations were the Egyptian, Mayan and Babylonian systems.

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The invention of number systems served three main purposes: to identify the total items in a group, to determine a sequence or series and to distinguish between various types of records or documentations. The Hindu-Arabic system, with its simple notations, gradually became the global norm for counting systems. It is further classified according to the base that is used. The binary system uses base 2, the octal system uses base 8, the decimal system uses base 10 and the hexadecimal system uses base 16.

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