Answer:
1.) The objects belonging to the set are called the elements of the set. Sets are commonly denoted with a capital letter, such as S = {1, 2, 3, 4}. The set containing no elements is called the empty set (or null set) and is denoted by { } or ∅. ... Denote each set by set-builder notation, using x as the variable.
2.) There are four main set operations which include set union, set intersection, set complement, and set difference.
