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
If {(-3, a)(4, 5)} represents a constant function then the value of a is
5
-3
4
3
If f(x) = x2 - x then f(x - 1) - f(x + 1) is
4x
4x + 2
2 - 4x
4x - 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
A and B are sets such that A - B = A, we can say that
A is a subset of B
B is a subset of A
A and B are disjoint sets
A∪B = A
For any sets A and B, ( A ∩ B) U ( A-B) =
A ∩ B
A
A - B
B
If A = { 1, 2, 3, 4, 5}. Then n [P(A)] =
8
16
32
Sets A and B have 3 and 6 elements respectively. What can be the minimum number of elements in A∪B ?
6
9
18
If A = {2, 3, 4}, B = {1, 3, 5, 7} U = {1, 2, 3.......8} then (A∪B)' is
{6, 8}
{1, 2, 3, 4, 6, 7}
{3}
{8}
If {(2, 7), (4, x)} represents constant function then the value of x is
2
7
-2