275期：((03/04/05/07/12/16/18/28/30/31/37/40/44/45/47/49))开：45中
276期：((03/04/05/08/09/12/14/16/18/25/27/28/29/31/35/42))开：09中
277期：((02/07/11/12/15/22/25/26/38/39/40/41/44/45/46/47))开：16错
278期：((01/04/07/08/10/16/18/26/29/32/35/37/38/41/45/49))开：28错
279期：((01/10/18/19/21/23/27/31/36/38/39/40/41/42/44/45))开：27中
280期：((06/08/09/13/14/16/18/22/23/24/25/29/31/42/46/49))开：//