If A = {2,3} and B = {1,2}, then AxB is equal to
{(2,1), (2,2), (3,1), (3,2)}
{(1,2), (1,3), (2,2), (2,3) }
{(2,2), (3,2)}
{(1,2), (2,3)}
If A = {1,2,3} and B = {3,4}, then (A ∪ B) X (A ∩ B) is
{3,3}
{(1,3), (2,3), (3,3), (1,4), (2,4), (3,4)}
{(1,3), (2,3), (3,3)}
{(1,3), (2,3), (3,3), (4,3)}
If AxB = {(1,1), (1,2), (1,3),(2,1),(2,2),(2,3)}, then A is equal to
{1,2}
{1,2,3}
{2,3}
None of these
If m elements are in a set A and n elements are in set B, then number of elements in set AxB is
m
n
mn
less than mn
If R is a relation from {11,12,13} to { 8,10,12} and is defined by y= x-3, then find the value of R-1.
{ (11,8), (10,13)}
{ (8,11), (10,13)}
{ (11,10), (8,13)}
{ (8,10), (11,13)}
If AxB= {(1,1), (1,2), (1,3), (2,1), (2,2), (2,3) } then B is equal to
Domain of the relation {(-3,1) (-1,1) (1,0) (3,0)} is
{-3,-1,-1,3}
{-3,-1,1,3}
{1,1,0}
{1,0}
If A = {5,6,7} and B= {1,2,3,4} , then number of elements in set AxBxB is equal to
36
48
16
Let R be a set of real numbers and let S be a relaion defined on R as follows. xSy, iff x2+y2=1.Which one of the following statements is correct?
S is a reflexive relation
S is a symmetric relation
S is a transitive relation
S is an anti-symmetric relation
Let A= {1,2,3} and R= {(1,2), (2,2), (3,1), (3,2)}. Then the domain of R-1 is
{2,1}
{1,3}
