279期：{{07,10,13,15,16,18,19,22,27,28,31,37,39,40,43,44}}开：22对了
280期：{{02,05,07,09,10,19,20,30,32,34,35,39,41,44,45,47}}开：08X
281期：{{02,04,05,07,09,12,13,18,24,27,32,35,36,42,46,49}}开：17X
282期：{{04,11,16,18,19,21,22,25,28,29,30,33,35,36,43,44}}开：30对了
283期：{{04,15,17,19,20,22,23,24,26,28,34,35,39,40,44,49}}开：00