171期：((02/03/07/13/21/23/24/25/28/31/37/38/39/45/46/48))开：28中
172期：((05/07/08/11/15/17/20/23/26/29/32/35/40/43/46/49))开：44错
173期：((07/11/17/18/22/24/25/26/28/30/31/34/35/43/47/49))开：26中
174期：((05/06/07/09/19/20/22/26/27/29/30/33/36/39/41/48))开：41中
175期：((03/05/09/10/12/14/17/19/23/26/30/35/38/39/48/49))开：？？