A x ( B U C ) =
( A x B ) U C
( A x B ) ∩ C
( A x B ) U ( A x C )
( A x B ) ∩ ( A x C )
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)}
Example for an ordered pair
{2,3}
{(2,3)}
(2,3)
(2)
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
Which of the following relation is an equivalence relation?
Every triangle is congruent to itself
'<' relation in natural numbers
in a set of lines in a plane
A, B are two non -empty sets. If A x B = B x A
A = B
A ≠ B
If R= {(2,4), (3,9), (4,16), (5,25)} then the range of R-1=
{2,3,4,5}
{4,9,16,25}
{25,16,9,4}
{2,3,4,5,9,16,25}
A= {1,2,3,} ; B= Φ then (A x B) =
{1,2,3,Φ}
Φ
{1,2,3}
{Φ}
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 an equivalence relation?
is parallel to
is a factor
is greater than
is perpendicular to
