297期:〓〓半数05,06,08,09,11,13,15,16,19,20,21,24,25,29,31,32,33,36,38,41,45,46,47,49》开49准
298期:〓〓半数01,06,07,08,14,17,19,20,21,23,25,26,28,32,33,35,36,39,40,41,45,46,47,49》开44错
299期:〓〓半数02,03,05,07,09,16,21,22,23,25,26,27,28,30,31,33,35,36,39,40,44,45,46,49》开21准
300期:〓〓半数02,04,06,07,11,12,13,14,15,19,20,21,23,27,28,32,33,34,36,38,40,42,43,47》开46错
301期:〓〓半数04,05,06,07,08,10,14,15,20,21,23,24,30,33,34,35,37,39,40,43,44,46,47,48》开？？