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moved from Natural Number
{{stub}}
According to most modern [[mathematics]] and [[logic]] textbooks a '''natural number''' is a non-negative [[integer]] such as 0, 1, 2, 3,... etc . Older books sometimes exclude [[zero]], as there is a long history of people thinking that zero is unnatural or not really a number.
[[Category:Mathematics]]
According to most modern [[mathematics]] and [[logic]] textbooks a '''natural number''' is a non-negative [[integer]] such as 0, 1, 2, 3,... etc . Older books sometimes exclude [[zero]], as there is a long history of people thinking that zero is unnatural or not really a number.
[[Category:Mathematics]]