178期：大围：04,07,08,09,13,16,17,18,19,24,25,26,27,28,31,33,34,40,41,44,45,46,47,48（共半数）开18准
179期：大围：01,03,04,05,07,12,14,19,20,21,22,23,24,25,26,28,29,31,32,39,40,41,44,47（共半数）开15错
180期：大围：01,04,05,06,07,09,10,11,12,13,16,17,22,23,27,28,30,32,34,39,40,42,43,49（共半数）开21错
181期：大围：02,03,04,05,07,08,09,11,13,15,16,19,20,21,24,25,30,32,35,38,40,43,46,49（共半数）开？？√【？中？】