279期：（寻码）《01,03,04,10,13,15,16,18,20,25,26,27,29,30,31,32,37,39,40,41,44,45,47,48》开：10对
280期：（寻码）《03,04,06,07,08,14,15,19,21,23,25,26,27,30,33,35,36,37,40,41,42,44,48,49》开：15对
281期：（寻码）《03,04,06,07,08,09,15,22,27,28,30,33,34,35,37,39,41,42,43,44,45,46,47,48》开：10错
282期：（寻码）《01,02,04,06,07,11,13,19,21,23,26,27,28,29,30,32,33,34,40,41,42,44,46,48》开：23对
283期：（寻码）《02,03,04,05,09,10,11,14,17,18,20,21,22,25,29,31,32,33,36,39,41,44,45,46》开：18对
284期：（寻码）《02,04,05,10,13,15,17,21,24,25,26,28,31,32,33,34,35,37,38,39,41,43,44,49》开：？？