Intersection of sets
A set can be formed by using all the common elements of two given sets. Such a collection is called the intersection of the given sets..
Representation of Sets
There are two methods of representing a set. (i) Roster Method (ii) Set builder fo..
Cardinality of a Set A
The number of elements in a finite set A, is the cardinality of A and is denoted by n(A..
Equal Sets
Two sets A and B are said to be equal if and only if they contain the same elements i.e. if every element of A is in B and every element of B is in A. We denote the equality by A = ..
Singleton Set or Singlets
A set consisting of a single element is called a singleton set or singlet. The cardinality of the singleton set is ..
Symmetric Difference of two sets
If A and B are two sets, we define their symmetric difference as the set of all elements that belong to A or to B, but not both A and B, and we denote it by A D B. Thu..
If A and B are two sets, we define their symmetric difference as the set of all elements that belong to A or to B, but not both A and B, and we denote it by A D B. Thu..Algebraic Properties of set operations
The Algebraic Properties of set operations are: Idempotent laws, Identity laws, Commutative laws, Associative laws, Distributive laws, De Morgan's Law..
Set of question and answer on Number Theory
Question 1 - Question: For the given sequence, suggest possible next three terms and find the general term. 7, 11, 15,---- Answer: First term = 7, Common Difference = 11 - 7 = 15 - 11 = 4 Next three terms are 15 + 4 = 19, 19 + 4 = 23, 23 + 4 = ..
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