1.

How many types of sets?

Answer»

There are various types of sets:

(i) Finite set: A set having no elements or a definite number of elements is called a finite set. 

Ex. V = The set of vowels of english alphabet = { a, e, i, o, u} 

(ii) Infinite set: A set having unlimited number of elements is called an infinite set. 

Ex. N = The set of natural numbers = { 1, 2, 3, 4 , ....} 

(iii) Empty set: A set containing no element is called the empty or null or void set. The symbol for empty set is φ. 

φ = { } 

(iv) Singleton set: A set containing only one element is called a singleton set. 

Ex. {2}, {a}, {0}

Note : { } is the empty set whereas {0} is a singleton set.



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