To which set or sets of numbers does the number - 5 belong

Question

Joselyn Bird

Mathematics

31 May, 02:11

To which set or sets of numbers does the number - 5 belong

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Thalia Hammond · Answer 1

Well, the largest set it belongs to is the set of all real numbers - numbers which can be written on the number line. - 5 is of the set of rational numbers since it can be written as a fraction (-5/1 for example). It is an integer since it is a whole number. Thus:

-5 ∈ ℤ (Integers) ∈ ℚ (Rational Numbers) ∈ ℝ (Real Numbers)