278期：黑牛<<05,08,09,10,11,12,14,15,17,18,21,22,24,27,28,29,32,34,37,42,43,45,47,49>>开：22有
279期：黑牛<<01,04,06,08,09,13,14,15,16,17,19,21,26,27,29,31,32,34,36,37,39,40,41,46>>开：27有
280期：黑牛<<02,03,05,08,09,11,12,15,16,17,20,22,25,27,28,29,30,31,35,37,38,43,45,48>>开：07没
281期：黑牛<<07,09,10,11,12,13,14,15,16,17,18,19,20,21,27,30,31,33,37,38,40,43,46,49>>开：00