Suppose that
D
\displaystyle {D}
D
and
R
\displaystyle {R}
R
are sets, given as shown below. How many functions are possible from
D
\displaystyle {D}
D
to
R
\displaystyle {R}
R
or a subset of
R
\displaystyle {R}
R
?
D
=
{
1
,
3
,
7
,
8
,
9
}
\displaystyle {D}={\left\lbrace{1},{3},{7},{8},{9}\right\rbrace}
D
=
{
1
,
3
,
7
,
8
,
9
}
R
=
{
t
,
x
}
\displaystyle {R}={\left\lbrace{t},{x}\right\rbrace}
R
=
{
t
,
x
}
Answer:
different functions
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