Roster Form in Sets – Definition and Examples

Here you will learn what is roster form in sets and how to represent sets in roaster form with examples.

Let’s begin –

Roster Form in Sets

Definition : In this method a set is described by listing elements, separated by comma and enclose then by curly brackets { }.

Example 1 : The set of vowels of english alphabet may be described as {a, e, i, o, u}.

Example 2 : The set of even  natural numbers can be described as {2, 4, 6, ….}. Here the dots stand for ‘and so on’.

Example 3 : If A is the set of all prime numbers less than 11, then A = {2, 3, 5, 7}.

Note : The order in which the elements are written in a set makes no difference.

Thus, {a, e, i, o, u} and {e, a, i, o, u} denote the same set. Also, the repetition of an element has no effect. for example, {1, 2, 3, 2} is the same set as {1, 2, 3}.