AP EAPCET 07-Jul-2022 Shift 2 Paper
© examsiri.com
Question : 18 of 160
Marks:
+1,
-0
If n P r = ( n − 1 ) P r + x . ( n − 1 ) P ( r + 1 ) ∀ n , r ∈ N r ≤ n x =
Go to Question: