câu 1:
uses crt;
var i,n,s: integer;
begin
clrscr;
write ('nhap n: '); readln (n):
for i:=1 to n do
if i mod 2<>0 then s:=s+sqr(i);
writeln ('tong la: ',s);
readln;
end.
câu 2:
uses crt;
var a: array[1..100] of integer;
i,n,min: integer;
begin
clrscr;
write ('nhap n: '); readln (n);
for i:=1 to n do
begin
write ('nhap a[',i,']: '); readln (a[i]);
end;
min:=a[1];
for i:=2 to n do
if min<a[i] then min:=a[i];
writeln ('so nho nhat la: ',min);
readln;
end.