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6 November, 13:42

To which subset of real numbers does - 18 not belong?

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  1. 6 November, 14:25
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    The subsets of the real numbers are the irrational numbers, rational numbers, integers, whole numbers, and the natural numbers. First, figure out where does - 18 belong? Well, - 18 is a rational number because it can be expressed as a fraction of two integers. It's also an integer.

    So, it doesn't belong in the sets of irrational numbers, whole numbers, and the natural numbers.
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