Permutation and combination sum

[From: ] [author: ] [Date: 12-03-20] [Hit: ]

] plzhelp!! :)-cant SHOW,(n+1)! /(n-1)!quite obviously,......

Show that (n+1)!=12[(n-1)!] plz help!! :)

can't SHOW, can only find n
(n+1)! /(n-1)! = 12
(n+1)(n) = 12
quite obviously, n = 3 <------

keywords: and,Permutation,combination,sum,Permutation and combination sum