The number of non - empty subsets of the set {1,2,3,4} is
15
14
16
17
If the sets A and B are defined as A = {(x,y): y = ex , x∈R} B = { (x,y): y = x, x∈R} then
B⊆A
A⊆B
A∩B = ∅
A∪B = A
Which of the following is a null set ?
{0}
{x:x>0 or x
{x:x2 = 4 or x=3}
{x: x2 + 1 = 0, x∈R}
If n(A) = 3 and n(B) = 6 and A ⊆ B, then the number of elements in A∪B is equal to
3
9
6
none of these
If A and B are any two sets, then A∩ (A∪B) is equal to
A
B
Ac
Bc
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}
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)
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)
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)'] = -------------
11
If A∩B = B then
A ⊂ B
B ⊂ A
A = ∅
B = ∅
