If {(2, 7), (4, x)} represents constant function then the value of x is
2
4
7
-2
If A = {1, 3, 5}. B is the set of integers and f: A → B defined by f(x) = x2 - 1 then the range of f is
{1, 9, 25}
{0, 8, 24}
{3, 9, 24}
None of these
If A is a subset of B, then A ∩ B is
A
B
{}
A∪B
For any two sets A and B, P ( A∩B) =
P (A)
P (B)
P (A∩B)
P (A) ∩ P (B)
If S and T are Two sets such that S has 21 elements T has 32 elements and S∩T has 11 elements, how many elements does ST have?
40
41
42
45
If {(a, 7), (5, b)} is an identity function, then the values of a and b are
5, 7
5,5
7,7
7, 5
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 f(x) = 1/x+1 g(x) = -x then gof is
-x + 1
-1/x+1
-(x + 1)
x2 - 1
For any two sets A and B, A ∩ ( AUB) =
A∩B
AUB
If P (A) = P (B), then
AB
BA
A = B
A = AUB