278期：必中24码（01,02,05,06,07,11,12,15,16,17,23,25,28,29,30,31,32,33,34,35,37,39,40,42）开：02中
279期：必中24码（02,04,05,07,11,12,14,16,17,20,25,27,30,31,32,33,36,38,40,41,42,43,48,49）开：10错
280期：必中24码（02,03,05,13,14,16,17,18,22,24,25,26,28,30,33,36,39,40,42,44,45,46,47,49）开：15错
281期：必中24码（01,03,07,09,10,11,12,16,18,19,29,30,31,32,34,37,38,41,42,45,46,47,48,49）开：10中
282期：必中24码（02,03,05,06,08,09,11,12,15,17,19,20,21,23,28,33,36,37,39,40,41,46,48,49）开：00