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
If n(A) = 3 and n(B) = 6 and A ⊆ B, then the number of elements in A∪B is equal to
6
none of these
The number of proper subsets of the set {1,2,3} is -----------
8
7
5
If A and B are any two sets, then A∩ (A∪B) is equal to
A
B
Ac
Bc
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
If A and B are disjoint,then n(A∪B) is equal to
n(A)
n(B)
n(A) + n(B)
n(A) * n(B)
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∩B = B then
A ⊂ B
B ⊂ A
A = ∅
B = ∅
The number of non - empty subsets of the set {1,2,3,4} is
15
14
16
B - A is defined as
{x/x∈A, x∉B}
{x/x∈B, x∉A}
{x/x∉A, x∉B}
{x/x∈B, x∈A and B}
