= “§Ó SO S¸NH C¸C GI¸ TRÞ KIÓU BOOLEAN CÃ

19) = “§Ó so s¸nh c¸c gi¸ trÞ kiÓu boolean cã: “ (19, 1) =” true>false “* (19, 2) = “true=false “ (19, 3) = “true<false “ (19, 4) =” False>true “