Here, you will learn what is sets in mathematics and different methods to write a set with examples.<\/p>\n
Let’s begin –<\/p>\n
A set is a collection of well defined objects which are distinct from each other.<\/p>\n
Set are generally denoted by capital letters A, B, C, ….. etc. and the elements of the set by a,b,c …..etc.<\/p>\n
If a is an element of a set A, then we write a \\(\\in\\) A and say a belongs to A.<\/p>\n
If a does not belong to A then we write a \\(\\notin\\) A.<\/p>\n
Example<\/span> : The collection of first five prime natural numbers in a set containing the elements 2,3,5,7,11.<\/p>\n Some important number sets<\/strong><\/p>\n N = Set of all natural numbers = {1, 2, 3, ….}<\/p>\n W = Set of all whole numbers = {0, 1, 2, 3, ….}<\/p>\n Z = Set of all integers = {…..-3, -2, -1, 0, 1, 2, 3,….}<\/p>\n Q = the set of all rational numbers<\/p>\n R = the set of all real numbers<\/p>\n (i) Roster Method<\/a> :<\/strong><\/p>\n In this method a set is described by listing elements, separated by comma and enclose then by curly brackets.<\/p>\n Example<\/span> : The set of vowels of English Alphabet may be described as {a, e, i, o ,u}.<\/p>\nMethods to write a set<\/h2>\n