Forms Of Set (Discrete Structure)

Forms Of Sets

1) Tabular/Roster Form

2) Descriptive Form

3) Set Builder Form

Roster form or tabular form:

In this, elements of the set are listed within the pair of brackets { } and are separated by commas. For example:

(i) Let N denote the set of first five natural numbers.

Therefore, N = {1, 2, 3, 4, 5}        → Roster Form

Descriptive Form:

State in words the elements of sets.

Example:

A=A= Set of first five natural numbers.

B=B= Set of positive even integers less or equal to fifty.

C=C= Set of positive odd integers.

Set Builder Form:

In set Builder form all the element of the set possesses with the single common property to become the member of the set

A={x:x∈N} N = natural numbers