Explain number system in short.

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Number system is a way of representing numbers using a set of symbols or digits.

Number system is used to count, measure, and perform calculations.
Common number systems include decimal, binary, octal, and hexadecimal.
Each number system has a base or radix, which determines the number of unique digits it uses.
For example, decimal system has a base of 10 and uses digits 0-9.
Binary system has a base of 2 and uses digits 0 and 1.
Octal system has a base of 8 and uses digits 0-7.
Hexadecimal system has a base of 16 and uses digits 0-9 and letters A-F.
Number systems can be converted to each other using specific algorithms.
For example, converting a decimal number to binary involves repeated division by 2.
Number systems are used in computer science, mathematics, and various other fields.

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