Business Mathematics by P. Mariappan

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CHAPTER 3

Theory of Sets and Its Business Applications

Set theory plays a vital role in modern mathematics and it is used in other disciplines also.

3.1 SET THEORY

A set S is a collection of definite and well-defined objects. These objects are called elements of the set.

3.2 REPRESENTATION OF SETS

The representation of a set can be done in two ways:

  1. Tabulation Method
  2. Set Builder Method/Rule Form

3.2.1 Tabulation Method

The individual elements of a set are listed and separated by using commas and enclosed within brackets.

A set of natural numbers less than seven is represented as A =

3.2.2 Set Builder Form

The set is described by stating a common property of its member.

The set of odd numbers less than .

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