278期：＜24码＞（04,09,11,13,15,16,17,19,20,22,23,24,25,28,29,31,39,40,41,42,44,45,46,49）开：22对
279期：＜24码＞（01,07,09,11,13,15,17,20,21,23,24,26,27,33,34,36,37,39,40,41,44,47,48,49）开：27对
280期：＜24码＞（02,03,05,06,11,12,13,15,16,17,19,23,26,28,29,32,35,36,37,39,45,47,48,49）开：07错
281期：＜24码＞（02,03,04,05,06,07,09,10,11,13,14,19,22,24,26,28,32,33,34,35,38,41,44,48）开：00