A set is collection of well-defined and well-distinguished objects. From a set it is possible to tell whether a given object belongs to a set or not.
The following are some illustrations of a set
- The possible outcomes in the toss of a die
- The integers from 1 to 100
- The vowels in English alphabets.
The basic characteristic of a set is that it should be well-defiend; its objects or elements should be well-distinguished for easy recognition by description.
TYPES OF SETS: Sets may be of various types. We give below a few of them.
Finite Set: When the elements of a set can be counted by a finite number of elements then the set is called a finite set.
Examples:
A={1,2,3,4,5,6}
B={1,2,3,........,500}
C={x|x is an even positive integer<500}
A={1,2,3,4,5,6}
B={1,2,3,........,500}
C={x|x is an even positive integer<500}