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It belongs to any set which contains it. For example:

{-21}

{pi, yellow, -21, Germany}

{numbers smaller than -17}

Q: What set does -21 belong to?

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The set of numbers which 3 does not belong is the set of even numbers.

The set of even numbers

The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.

10 belongs to the set "natural numbers", but it can also belong to whole numbers, and rational numbers

30 belongs to the set of natural numbers

Related questions

The set of numbers which 3 does not belong is the set of even numbers.

You Belong with Me was created on 2009-04-21.

I Belong was created on 2007-07-21.

what set is 0.56

The set of even numbers

what set is 0.56

The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.

10 belongs to the set "natural numbers", but it can also belong to whole numbers, and rational numbers

The set of negative integers

A loop refers to a set of contacts that belong to a single circuit.

30 belongs to the set of natural numbers

Its an imperial numberIts belong to rational, whole, and integars.