The cardinal number of the set A = {Present President of India} is
n (A) = 2
n (A) = 0
n (A) = 1
n (A) = 3
Given A = {Present President of India}
As we know,
President of any country is only one
⇒A=Singleton set
⇒n(A)=1
The cardinal number of the set A = {Present Prime minister of India} is
The cardinality of a universal set, set A and set B are represented as n(U), n(A), n(B) respectively. Find the cardinality of the set which does not contain elements of set A and set B.
If there are two sets A and B such that n(¯A∩¯B)=n(A∩B). Universal set contains 'x' elements. Then n (A) + n (B) is