Sets

A set is a collection

A set is a collection of objects where we can clearly and definitely decide which objects belong to it. Objects in a set are called elements or member

There are two main methods

There are two main methods: (1) Listing/Roster Method - writing all elements in curly brackets {1, 2, 3, 4}, and (2) Rule/Set Builder Method - using a

Sets are classified as

Sets are classified as: (1) Singleton Set - contains only one element, (2) Empty/Null Set (φ or {}) - contains no elements, (3) Finite Set - has count

Two sets A and B

Two sets A and B are equal (A = B) if they contain exactly the same elements. Set B is a subset of A (B ⊆ A) if every element of B is also in A. Impor

Venn diagrams use closed figures (usually

Venn diagrams use closed figures (usually circles or rectangles) to represent sets visually. Elements are shown as points inside the figures. These di