base

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base In mathematics, the number of units in a number system that is equivalent to one unit in the next higher counting place. Thus 10 is the base of the decimal system: only the ten digits 0–9 can be used in the units, tens, hundreds, and so on. Each number system has a number of symbols equal to its base. In the binary system (base 2) there are two symbols, 0 and 1.

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