Sets

A set is a well

A set is a well-defined collection of distinct objects. The word 'well-defined' means that for any given object, we can clearly determine whether it b

In Roster form

In Roster form, all elements of a set are listed explicitly, separated by commas, and enclosed in curly brackets. For example: V = {a, e, i, o, u} rep

In Set

In Set-builder form, elements are represented by a common property rather than being listed explicitly. The general format is: A = {x : property of x}

A finite set is one where

A finite set is one where the number of elements can be counted and is finite. For example, the set of students in your school is finite. An infinite

An empty set or null set

An empty set or null set is a set that contains no elements. It is denoted by the symbol ∅ or {}. For example, A = {x : x ∈ ℝ and x² + 1 = 0} is an em