Combinations and Permutations (Jee Mains) | ExamDuo
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Permutations
Medium
Combinations and Permutations
If for some
m
,
n
;
6
C
m
+
2
(
6
C
m
+
1
)
+
6
C
m
+
2
>
8
C
3
and
n
−
1
P
3
:
n
P
4
=
1
:
8
, then
n
P
m
+
1
+
n
+
1
C
m
is equal to
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376
C
384
D
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