Bijective Functions Decreasing Values (Jee Mains) | ExamDuo
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Permutations
Medium
Bijective Functions Decreasing Values
The number of bijective functions
f
:
{
1
,
3
,
5
,
7
,
.
.
.
,
99
}
→
{
2
,
4
,
6
,
8
,
.
.
.
100
}
, such that
f
(
3
)
≥
f
(
9
)
≥
f
(
15
)
≥
f
(
21
)
≥
.
.
.
.
f
(
99
)
, is
Ask about this question
SELECT ONE OPTION
A
50
P
17
B
50
P
33
C
33
!
×
17
!
D
50
!
2
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