173期:半数【《01,02,04,10,11,14,15,16,18,19,21,23,24,27,29,30,31,32,34,38,42,44,45,49》】开:49准
174期:半数【《03,09,10,11,12,13,16,17,18,21,23,24,29,30,31,32,34,37,42,43,44,46,47,49》】开:48错
175期:半数【《01,02,03,05,06,07,08,09,10,14,15,20,24,25,29,31,34,35,36,38,40,42,48,49》】开:40准
176期:半数【《01,02,05,10,11,12,13,14,18,19,20,21,24,26,27,29,32,34,35,38,39,40,44,47》】开:？？？？