If A, B, C are three sets, then A∩(B∪C) is equal to
(A∪B) ∩ (A∪C)
(A∩B) ∪ (A∩C)
(A∪B) ∪ (A∪C)
None of these
Given n(U) = 20, n(A) = 12, n(B) = 9 , n(A∩B) = 4 , where U is the universal set, A and B are subsets of U then n[(A∪B)'] = -------------
17
9
11
3
The smallest set A such that A∪{1,2} = {1,2,3,5,9} is
{2,3,5}
{3,5,9}
{1,2,5,9}
none of these
The number of proper subsets of the set {1,2,3} is -----------
8
7
6
5
If A,B,C are any three sets, then B-(A∪C)
(A - B)∩ (A - C)
(B - A) ∩(B - C)
(B - A)∩(A - C)
(A - B∩(B - C)
Which of the following statement is true ?
3 ⊆ {1,3,5}
3 ∈ {1,3,5}
{3} ∈ {1,3,5}
{3,5} ∈ {1,3,5}
If A and B are any two sets, then A∩ (A∪B) is equal to
A
B
Ac
Bc
If A∩B = B then
A ⊂ B
B ⊂ A
A = ∅
B = ∅
Let A and B be two non empty subsets of a set X. Such that A is not a subset of B, then
A is always a subset of the complement of B
B is always a subset of A
A and B are always disjoint
A and the complement of B are always non - disjoint
Let A and B be subsets of a set X. Then
A - B = A∪B
A - B = A∩B
A - B = Ac ∩ B
A - B = A∩Bc
