var i:integer;
begin
for i:=1 to 100 do
if i mod 2=0 then write(' Cac so chan tu 1 den 100 la: ',i,' ');
readln;
end.
var i:integer;
begin
for i:=1 to 100 do
if i mod 2=0 then write(i,' ');
readln;
end.
cách khác
var i : integer ;
begin
for i:= 1 to 50 do write(i*5);
readln
end.