If A= {2,3} and B= {1,2} then BxA is equal to
{(2,1), (2,2), (3,1) (3,2)}
{(1,2), (1,3), (2,2), (2,3)}
{(2,1), (3,2)}
{(1,2), (2,3)}
If AxB= {(1,1), (1,2), (1,3), (2,1), (2,2), (2,3) } then B is equal to
{1,2}
{1,2,3}
{2,3}
None of these
The void relation on a set A is
Reflexive
Reflexvie and symmetric
Reflexive and transitive
Transitive and symmetric
Which one of the following is the domain of the relation R defined on the set N of national numbers as R= { (m,n) 2m+3n= 30; m,n N} ?
{2,4,6,8}
{3,7,11,15}
{3,6,9,12}
{3,6,9, 12,15}
N is the set of natural numbers. The relations R is defined on NxN as follows.
(a,b) R (c,d) a+d= b+c is
Symmetric
Transitive
All of these
Let A = {2,3,4,5} and R= {(2,2), (3,3), (4,4) (5,5) } be a relation in A the R is
Trasitive
In a Euclidean plane, which one of the following is not an equivalence relation?
Parallelism of lines
Congruence of triangles
Similarity of triangles
Orthogonality of lines.
The relation ≥ on the set R of all real numbers is
Both (1) and (3)
Two finite sets A and B having m and n elements. The total number of relation A to B is 64, then possible values of m and n are.
2 and 4
2 and 3
2 and 1
64 and 1
