The relation R on a set A= {1,2,3,4} is defined as {(1,1), (1,3), (2,2), (2,3), (3,1),(3,2) }. Then R is
Reflexive
Symmetric
Anti -symmetric
Transitive
Let A= {2,3,4,5} and R= {(2,2), (3,3) (4,4), (5,5), (2,3), (3,2), (3,5), (5,3)} be a relation in A. Then R is
Reflexive and transitive
Reflexive and symmetric
Reflexive and anti symmetric
None of these
Cartesian product of two sets A and B is Ax B =
{(a,b); aA and bB}
{x; xA and B}
{(a,b); aB and bA}
If A = {1,2,3,4} and B= {5,6,7}, then number of relations from A to B is equal to
24
23
27
212
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
What is the value of x for which the function f(x) = 5/3x-2 becomes meaningless ?
5
3
3/2
2/3
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 A = {1,2,3,4} and B = {2,3,5} then identify the correct relation, among the following from A to B given by xRy, iff x ‹ y
R = {(1,2), (1,3), (2,), (2,3)}
R = {(3,2), (3,3), (3,4), (3,5)}
R = {(1,2), (1,3), (2,3), (2,5)}
R = {(1,3), (1,5), (3,2), (4,2)}
If R be a relation on NxN defined by (a,b) R (c,d) iff ad= bc; then R is
An equivalence relation
Symmetric and transitive but not reflexive
Reflexive and transitive but not symmetric
Reflexive and symmetric but not trasitive.
