What are natural numbers?


Quick Answer

In mathematics, natural numbers are whole numbers starting with 1 and going upward. In some fields, the natural numbers start with 0 but, ultimately, natural numbers do not include negative numbers or fractions.

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What are natural numbers?
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Full Answer

Natural numbers are also referred to as "counting" numbers because people use them to count and order things. Given that, there is some disagreement amongst mathematicians about whether 0 is a natural number or not. Humans have used natural numbers to count since caveman days, and to count something, people started with 1. This is the reason mathematicians against starting with 0 claim it is not a natural number.

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