If A = {1,2,3} and B = {x,y,z} then the number of injections from A in to B is
3
6
9
27
If the set A has 3 elements and the set B = {a,b,c} Then the number of elements in A x B is
None of these
The relation R from A = {11, 12, 13} to B = {8, 10, 12} defined by y = x - 1 is:
{(11, 10), (13, 12)}
{(10, 11), (12, 13)}
{(10, 11), (12, 13), (13, 12)}
If A = {x : x^{2} - 3x + 2 = 0} and R is a universal relation on A, then R is
{(1, 1), (2, 2)}
{(1, 1)}
{?}
{(1, 1), (1,2), (2,1), (2,2)}
Let A = {a,b,c,d}, B = {b,c,d,e}. Then n[(A × B) ∩ B × A)] is equal to
If A × B = {(1,1), (1,2), (1, 3), (2, 1), (2,2), (2, 3)}, then B is equal to.
{1, 2}
{1, 2, 3}
{2, 3}
The period of the function f(x) = sin^{3}x + cos^{3}x is
2∏
∏
2∏/3
Let R = {(1,3), (4, 2), (2, 4) (2, 3) (3, 1)} be a relation on the set A = {1, 2, 3, 4}. The relation R is:
Reflexive
Transitive
Not symmetric
A function
In an Euclidean plane, which one of the following is not an equivalence relation.
Parallelism of lines
Congruence of triangles
Similarity of triangles
Orthogonality of lines
What is the value of x for which the function f(x) = 5/3x-2 becomes meaningless ?
5
3/2
2/3