Make a Modal of number system
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Number Systems: Naturals, Integers, Rationals, Irrationals, Reals, and Beyond
The Natural Numbers
The natural (or counting) numbers are 1,2,3,4,5, etc. There are infinitely many natural numbers. The set of natural numbers, {1,2,3,4,5,...}, is sometimes written N for short.
The whole numbers are the natural numbers together with 0.
(Note: a few textbooks disagree and say the natural numbers include 0.)
The sum of any two natural numbers is also a natural number (for example, 4+2000=2004), and the product of any two natural numbers is a natural number (4×2000=8000). This is not true for subtraction and division, though