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 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
The number of non - empty subsets of the set {1,2,3,4} is
15
14
16
17
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
Let n(∪) = 700, n(A) = 200, n(B) = 300 and n(A∩B) = 100 then n(A'∩B' )
400
600
300
200
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
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 three sets, then A∩(B∪C) is equal to
(A∪B) ∩ (A∪C)
(A∩B) ∪ (A∩C)
(A∪B) ∪ (A∪C)
None of these
If A = [x:x is a multiple of 3] and B = [x:x is a multiple of 5], then A - B is
A'∩B
A∩B'
A'∩B'
(A∩B)'
