Question

simplifique An,3/An,2

Answer 1

An,3........n.(n-1).(n-2) 
---------- = ------------------ = n 
An-1,2........(n-1).(n-2) 



A2n,2..........2n.(2n-1).......2n-1 
------------- = ---------------- = --------- 
A2n+1,2.....(2n+1).(2n).....2n+1