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Mathematics
Mathematics
Problem
Let
A
=
{
1
,
2
,
3
}
A=\{1,2,3\}
A
=
{
1
,
2
,
3
}
and
B
=
{
1
,
2
,
3
}
B=\{1,2,3\}
B
=
{
1
,
2
,
3
}
. Consider the relations
S
=
{
(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
1
,
2
)
}
,
R
=
{
(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
2
,
3
)
}
.
S=\{(1,1),(2,2),(3,3),(1,2)\},\qquad R=\{(1,1),(2,2),(3,3),(2,3)\}.
S
=
{(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
1
,
2
)}
,
R
=
{(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
2
,
3
)}
.
Which ordered pair in
R
R
R
prevents
R
R
R
from being a subrelation of
S
S
S
? a)
(
3
,
2
)
(3,2)
(
3
,
2
)
b)
(
1
,
2
)
(1,2)
(
1
,
2
)
c)
(
2
,
3
)
(2,3)
(
2
,
3
)
d)
(
2
,
1
)
(2,1)
(
2
,
1
)
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