uses crt; var A:array[1..1000] of integer; n,i:integer; S:real; begin clrscr; write('Nhap n: '); readln(n); for i:=1 to n do begin write('Nhap phan tu thu ',i,': '); readln(A[i]); S:=S+A[i]; end; S:=S/n; write('Trung binh cong la: ',S:4:2); readln end.
