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# Positive number

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A **positive number**, also known as a positive integer, is a number that is bigger than zero. The set of all positive integers is written as [math]{Z}_+[/math].^{[1]}

A positive number can be written with a "+" symbol in front of it, or just as a number.^{[2]} For example, the numbers "+3" and "3" stand for the same numbers.

Positive numbers are written to the right of zero on a number line:

In the above line, the positive numbers 1, 2, 3, 4, 5 and 6 are shown.

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## References

- ↑ "Comprehensive List of Algebra Symbols" (in en-US). 2020-03-25. https://mathvault.ca/hub/higher-math/math-symbols/algebra-symbols/.
- ↑ "Positive number definition - math word definition - Math Open Reference". https://www.mathopenref.com/positive-number.html.