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Mathematics
Problem
Let
R
=
{
a
,
b
,
c
,
d
,
e
}
R = \{a, b, c, d, e\}
R
=
{
a
,
b
,
c
,
d
,
e
}
and
S
=
{
1
,
2
,
3
,
4
}
S = \{1, 2, 3, 4\}
S
=
{
1
,
2
,
3
,
4
}
. Total number of onto function
f
:
R
→
S
f: R \to S
f
:
R
→
S
such that
f
(
a
)
≠
1
f(a) \neq 1
f
(
a
)
=
1
, is equal to \_\_\_\_. [NA, April 8, 2023 (II)]
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