Sets？I learned it in high school！ Ways to describe a set. Classification of sets:Empty set,finite sets,infinite sets,.. Frequently used sets:natural number set,integer set,real number set,. Subsets and proper subsets. Operations:union,intersection,complement. ·Formulas1ikeA=AUA ■Counting of subsets. -What else can you teach me?Sets? I learned it in high school!  Ways to describe a set.  Classification of sets: Empty set, finite sets, infinite sets,…  Frequently used sets: natural number set, integer set, real number set, …  Subsets and proper subsets.  Operations: union, intersection, complement.  Formulas like  Counting of subsets. What else can you teach me?