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Mathematics
Problem
Let
A
=
{
1
,
2
}
A=\{1,2\}
A
=
{
1
,
2
}
and
B
=
{
3
,
4
}
B=\{3,4\}
B
=
{
3
,
4
}
. Which of the following sets is a relation from
A
A
A
to
B
B
B
? a)
{
(
3
,
1
)
,
(
4
,
2
)
}
\{(3,1),(4,2)\}
{(
3
,
1
)
,
(
4
,
2
)}
b)
{
(
1
,
3
)
,
(
2
,
4
)
}
\{(1,3),(2,4)\}
{(
1
,
3
)
,
(
2
,
4
)}
c)
{
(
1
,
3
)
,
(
2
,
5
)
}
\{(1,3),(2,5)\}
{(
1
,
3
)
,
(
2
,
5
)}
d)
{
(
1
,
1
)
,
(
2
,
4
)
}
\{(1,1),(2,4)\}
{(
1
,
1
)
,
(
2
,
4
)}
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