270期:〓〓半数01,04,06,08,09,10,11,12,14,18,20,21,24,27,28,31,32,33,34,36,37,38,40,43,44,45,46,47》开44准
271期:〓〓半数02,07,09,10,14,15,20,22,24,25,26,27,28,29,30,31,32,35,36,37,38,39,41,43,44,47,48,49》开26准
272期:〓〓半数02,03,04,05,08,09,11,12,13,14,16,17,21,25,26,27,29,31,32,33,34,36,37,38,43,46,47,48》开23错
273期:〓〓半数02,03,04,06,08,09,10,12,14,15,16,21,22,23,28,30,31,32,33,34,35,36,37,39,40,43,44,49》开？？