277期：{{03,05,11,17,18,22,24,31,32,34,36,37,38,39,46,47}}开：11对了
278期：{{01,04,07,08,11,14,16,17,21,25,31,40,43,44,45,48}}开：02X
279期：{{02,07,09,10,11,18,20,27,28,29,32,34,35,39,46,47}}开：10对了
280期：{{06,08,10,12,13,14,18,26,27,28,33,35,41,42,47,49}}开：15X
281期：{{01,02,13,14,18,19,20,22,28,29,35,36,42,47,48,49}}开：00