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Byju's Answer
Standard XII
Physics
Image of an Extended Object in Plane Mirror
Let A = 1, 2,...
Question
Let A = {1, 2, 3} and R = {(2, 2), (3, 1), (1, 3)} then the relation R on A is
A
reflexive
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B
symmetric
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C
transitive
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D
anti-symmetric
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Solution
The correct option is
C
symmetric
R
=
{
(
2
,
2
)
;
(
3
,
1
)
;
(
1
,
3
)
}
∙
not Reflective
∵
(
1
,
1
)
&
(
3
,
3
)
absent
∙
Symm.
∵
(
1
,
3
)
&
(
3
,
1
)
both Present
∙
not transitive
∵
(
3
,
1
)
→
(
1
,
3
)
⇒
(
3
,
3
)
but
(
3
,
3
)
not Present.
∙
it is symm.
∴
not anti-symm.
Suggest Corrections
0
Similar questions
Q.
Let
A
=
{
1
,
2
,
3
}
and
R
=
{
(
1
,
1
)
,
(
1
,
3
)
,
(
3
,
1
)
,
(
2
,
2
)
,
(
2
,
1
)
,
(
3
,
3
)
}
then the relation R on A is:
Q.
Let
A
=
{
1
,
2
,
3
}
. Then show that the smallest equivalence relation on
A
is
{
(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
}
Q.
Let
A
=
{
1
,
2
,
3
}
and
R
=
{
(
1
,
1
)
,
(
2
,
2
)
,
(
1
,
2
)
,
(
2
,
1
)
,
(
1
,
3
)
,
(
3
,
1
)
}
be a relation on A, then R is:
Q.
Let
A
=
{
1
,
2
,
3
}
and
R
=
{
(
2
,
2
)
,
(
3
,
1
)
,
(
1
,
3
)
}
then the relation R on A is:
Q.
Let A={ 1, 2, 3, 4} and R= {( 2, 2), (3, 3), (4, 4), (1, 2)} be a relation on A. Then R is
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