Branch of mathematics that arises from counting, the most basic mathematical operation. Arithmetic encompasses various ways of counting, or manipulating numbers: addition, subtraction, multiplication, and division.
Arithmetic or arithmetics (from the Greek word αριθμός = number) is the oldest and most elementary branch of mathematics, used by almost everyone, for tasks ranging from ...
In mathematics and statistics, the arithmetic mean (or simply the mean) of a list of numbers is the sum of all of the list divided by the number of items in the list.
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