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Mathematics
Mathematics
Problem
Take the set
A
=
{
0
,
1
,
2
}
A=\{0,1,2\}
A
=
{
0
,
1
,
2
}
and define the relation
R
=
{
(
a
,
b
)
∈
A
×
A
∣
a
+
b
is even
}
R=\{(a,b)\in A\times A\mid a+b \text{ is even}\}
R
=
{(
a
,
b
)
∈
A
×
A
∣
a
+
b
is even
}
. How many ordered pairs are in
R
R
R
? a) 8 b) 6 c) 4 d) 5
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