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Certain procedures which take one or more numbers as input and produce a number as output are called numerical [http://en.wikipedia.org/wiki/Operation_(mathematics) operations]. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. More common are binary operations which take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called [http://en.wikipedia.org/wiki/Arithmetic arithmetic].[http://en.wikipedia.org/wiki/Number]

Certain procedures which take one or more numbers as input and produce a number as output are called numerical [http://en.wikipedia.org/wiki/Operation_(mathematics) operations]. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. More common are binary operations which take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called [http://en.wikipedia.org/wiki/Arithmetic arithmetic].[http://en.wikipedia.org/wiki/Number]

 

==Origins==

==Origins==

Anglo-Norman nombre, noumbre, numbre, nounbre, nunbre, numere and Old French, Middle French nombre sum, total (early 12th cent. as numbre), grammatical number ([http://en.wikipedia.org/wiki/13th_century 13th cent.]), a (large, small) [[quantity]] ([http://en.wikipedia.org/wiki/14th_Century 14th cent.]), [[conformity]] in verse to a regular [[measure]] (1549) < classical [[Latin]] numerus sum, total, numeral, number as indicating a part or position in a series, a (large, small) quantity, a (large or small) [[group]] or collection of [[persons]] or [[things]], a class or category, number as an abstract [[concept]], the [[fact]] of being numerous, numerical calculation, arithmetic, rhythm in [[words]] or [[music]], [[Grammar|grammatical]] number, metrical foot, (plural) metrical lines, musical strains, perhaps < a suffixed ablaut variant of the same Indo-European base as ancient [[Greek]]  (NOMOS n.).

Anglo-Norman nombre, noumbre, numbre, nounbre, nunbre, numere and Old French, Middle French nombre sum, total (early 12th cent. as numbre), grammatical number ([http://en.wikipedia.org/wiki/13th_century 13th cent.]), a (large, small) [[quantity]] ([http://en.wikipedia.org/wiki/14th_Century 14th cent.]), [[conformity]] in verse to a regular [[measure]] (1549) < classical [[Latin]] numerus sum, total, numeral, number as indicating a part or position in a series, a (large, small) quantity, a (large or small) [[group]] or collection of [[persons]] or [[things]], a class or category, number as an abstract [[concept]], the [[fact]] of being numerous, numerical calculation, arithmetic, rhythm in [[words]] or [[music]], [[Grammar|grammatical]] number, metrical foot, (plural) metrical lines, musical strains, perhaps < a suffixed ablaut variant of the same Indo-European base as ancient [[Greek]]  (NOMOS n.).