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There are 3 types : Finite set, Infinite set, Null set.

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__Finite sets__are sets with fixed number of elements, in other words, the members of this set may be counted.2)

__Infinite sets__are sets with infinite elements, their members may not be counted because they never end.3)

__Null set__is a set with no elements. It is also known as the empty set.Finete set, infinete sets, joint set, disjoint set, null set, subset equal sets, equivalent sets, universal set, unit set/singleton set