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Subjects
Mathematics State Board
Class 10
Relations and Functions
Relations
5.
Relation or not a relation
Exercise condition:
2
m.
Let \(A =\) \(\{\)
10
,
15
,
14
,
11
\(\}\) and \(B =\) \(\{\)
9
,
8
,
7
\(\}\). Which of the following sets are relations from \(A\) to \(B\)?
i)
\(R_1 =\)
{
(
10
,
9
)
,
(
15
,
5
)
,
(
7
,
10
)
,
(
14
,
11
)
}
not a relation
relation
ii)
\(R_2 =\)
{
(
7
,
12
)
,
(
15
,
8
)
}
not a relation
relation
iii)
\(R_3 =\)
{
(
10
,
9
)
,
(
15
,
8
)
,
(
10
,
7
)
,
(
14
,
8
)
,
(
15
,
9
)
,
(
11
,
8
)
,
(
14
,
9
)
}
not a relation
relation
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