Which of the following is an equivalence relation?
is parallel to
is a factor
is greater than
is perpendicular to
If A= {1,2,3,4} ; B= {5,6,7} which of the following is a relation from B to A?
{(1,5), (2,6), (3,7)}
{(5,1), (6,3),(7,4)}
{(5,3), (6,2), (3,7)}
{(6,2), (7,3), (1,5)}
(x,y) R, ____ R-1
(y,x)
(x,y)
(x,x)
(y,y)
R= {(a,a2), (b,b2), (c, c2)}. Range of R=
{a,b,c}
{a2,b,c2}
{a3,b3,c3}
{a2,b2,c2}
Which of the following is a function?
{(1,2), (2,3), (2,4)}
{(1,2), (2,2), (3,2)}
{(1,4), (1,5), (1,6)}
{(2,3), (3,2), (2,4)}
A= {1,2,3}; The relation R is reflexive in A; so R =
{(1,2), (2,3), (3,1)}
{(1,2), (1,3), (2,3)}
{(1,1), (2,2), (3,3)}
{(3,2), (2,1), (3,1)}
A= {2,1} ; B= {0} then A x B is
{(2,0), (1,0)}
{(0,2), (0,1)}
{(2,0), (0,1)}
Φ
If (x, -3) = (-4,y) then the values of x and y are
x = -3; y = -4
x = -4; y = -3
x = 3; y = 4
x = -4; y = 3
Example for an ordered pair
{2,3}
{(2,3)}
(2,3)
(2)
A= {1,2,3,} ; B= Φ then (A x B) =
{1,2,3,Φ}
{1,2,3}
{Φ}