280期：{{01,04,07,08,09,11,15,17,18,21,25,30,40,44,47,49}}开：08准
281期：{{03,04,05,06,12,14,23,25,30,35,36,37,41,44,47,49}}开：17错
282期：{{04,06,07,08,10,12,18,20,23,27,28,30,42,43,44,46}}开：30准
283期：{{01,03,15,16,19,20,23,25,27,28,32,35,38,41,42,46}}开：39错
284期：{{02,03,08,12,17,19,22,23,27,28,31,34,37,41,43,45}}开：00