👉 In set theory, a superset of a set A is an additional set that contains all elements in A that are also in B. In other words, it's a subset of A but not equal to it. For example, superset of {1, 2, 3} is {4, 5, 6}, since the number 7 is not in either set. Supersets can be defined for any class of sets, and they are used in various mathematical structures