n(A x B ) = 10; n (A) = 5. So n(B) =
5
2
10
1
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)}
R= {(a,a2), (b,b2), (c, c2)}. Range of R=
{a,b,c}
{a2,b,c2}
{a3,b3,c3}
{a2,b2,c2}
(x+y,1) = (5, x-y), then x=
6
3
4
If A x B = Φ then
A is a null set
B is a null set
Either A or B is a null set
Both A and B are null sets
A= {2,3,4} ; B= {3,4}; C= {2}. (A-B) x C =
{(2,3), (2,2), (4,2)}
{(3,2), (4,2)}
{(2,2)}
{(2,2,), (3,2), (4,2}
The relationship between father and his children
one one
many to one
many to many
one to many
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
R= {(1,a), (2,b), (3,c)}. Domain of R=
{1,a,2,b,3,c}
{1,2,3,a}
{1,2,3}
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
