278期：（（03,04,06,07,15,16,23,24,28,29,31,32,40,42,44,46））开：28准
279期：（（01,02,04,06,07,10,14,21,24,26,30,35,39,41,45,47））开：27错
280期：（（02,07,08,12,13,16,18,20,24,25,33,36,42,43,44,49））开：42准
281期：（（02,03,04,06,11,16,19,20,24,30,35,38,43,44,47,49））开：47准
282期：（（03,04,06,09,10,15,18,20,26,28,29,31,35,36,46,48））开：41错
283期：（（03,13,19,20,23,25,31,32,33,35,36,37,41,43,45,49））开：45准
284期：（（05,09,10,11,12,17,25,29,30,31,32,34,35,41,42,43））开：41准