+Unary describes that which involves a single element or unit. It often refers to operations acting on a [Single Operand](/wiki/single_operand) or representations, like [Tally Marks](/wiki/tally_marks), built from repetition of one symbol.
+## See also
+- [Binary](/wiki/binary)
+- [Ternary](/wiki/ternary)
+- [Number System](/wiki/number_system)
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