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Mathematics
Problem
If
n
!
n!
n
!
,
3
×
n
!
3 \times n!
3
×
n
!
, and
(
n
+
1
)
!
(n+1)!
(
n
+
1
)!
are in GP, then
n
!
n!
n
!
,
5
×
n
!
5 \times n!
5
×
n
!
, and
(
n
+
1
)
!
(n+1)!
(
n
+
1
)!
are in (a) AP (b) GP (c) HP (d) none of these
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