1:
uses crt;
var i:integer;
begin
clrscr;
writeln('100 so tu nhien dau tien la: ');
for i:=0 to 99 do
write(i:4);
readln;
end.
2:
uses crt;
var i:integer;
begin
clrscr;
writeln('cac so le trong day 100 so tu nhien dau tien la: ');
for i:=0 to 99 do
if i mod 2=1 then write(i:4);
readln;
end.