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what is this subset called?
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Sagot :

Answer:

In set theory, a subset is a set which has some (or all) of the elements of another set, called superset, but does not have any elements that the superset does not have. A subset which does not have all the elements of its superset is called a proper subset. We use the symbol ⊆ to say a set is a subset of another set.

Step-by-step explanation:

brainliest pls^^

Answer:

Null set or empty set

Step-by-step explanation:

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