uses crt;
var tb1,tb2: real;
    n,i: integer;
    a: array[1..100] of real;
begin
    clrscr;
    write('Nhap so ban trong lop: ');
    readln(n);
    for i:=1 to n do 
        begin
            write('Nhap diem ban thu ',i,': ');
            readln(tb1);
            tb2:=tb1+tb2;
        end;
    tb2:=tb2/n;
    write('Diem trung binh mon tin cua ca lop la: ',tb2:2:2);
    readln
    end.

uses crt;
var i,n:longint;
a:array[1..100] of real;
s1,s,max,min:real;
begin
clrscr;
write('Nhap n: '); readln(n);
for i:=1 to n do
begin
write('Diem trung binh mon tin hoc cua ban thu ',i,' la: ');readln(a[i]);
end;
min:=a[1];max:=a[1];
for i:=2 to n do begin
if a[i]>max then max:=a[i];
if a[i]<min then min:=a[i]; end;
for i:=1 to n do
s:=s+a[i];
s1:=s/n;
writeln('So diem cao nhat la: ',max);
writeln('So diem thap nhat la: ',min);
write('Diem TB cua ca lop la: ',s1:0:1);
readln
end.