047期:〓〓半数01,02,05,06,07,09,10,13,16,17,18,20,22,26,27,30,31,32,35,38,39,42,43,47》开47准
048期:〓〓半数02,03,06,07,09,11,12,13,16,17,18,22,24,26,27,29,30,33,39,40,43,44,45,46》开28错
049期:〓〓半数04,05,08,09,10,12,14,17,19,21,23,27,29,30,31,32,34,35,36,40,42,43,46,47》开44错
050期:〓〓半数01,04,05,06,09,16,18,20,22,24,25,28,29,31,32,35,36,37,40,41,42,44,47,48》开42准
051期:〓〓半数02,03,04,08,09,12,14,15,18,21,24,25,29,30,36,37,38,39,41,44,45,47,48,49》开？？