Q: What is the complement of set UR?

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The complement of a set S, relative to the universal set U, consists of all elements of U that are not in S.

Yes.

they are not the same elements.

This is called the complement of the set.

The main set operations are: union, intersection and complement.

Related questions

The complement of an empty set is universal set

yes

false, because the complement of a set is the set of all elements that are not in the set.

An absolute complement is the set which includes exactly the elements belonging to the universal set but not to a given set.

The complement of a set S, relative to the universal set U, consists of all elements of U that are not in S.

The complement of a subset B within a set A consists of all elements of A which are not in B.

Yes.

they are not the same elements.

This is called the complement of the set.

The main set operations are: union, intersection and complement.

The complement of a set "A" is another set - call it "B" - that contains all the elements (of the universe under consideration) which are NOT in set "A". The "universe" must be specified (or implied), since concepts like the "set of all sets" are known to cause contradictions. For example, if the universe is all the people living in my country, and set "A" is all male people, then the "complement" would be the female people.

add connectives.