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Elementary arithmetic
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==Counting== {{Main|Counting#Counting in mathematics}} Counting assigns a natural number to each object in a [[Set theory|set]], starting with 1 for the first object and increasing by 1 for each subsequent object. The number of objects in the set is the count. This is also known as the [[cardinality]] of the set. Counting can also be the process of [[Tally marks|tallying]], the process of drawing a mark for each object in a set.
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