279期:必出单双===>>>双数<<<===开10准

280期:必出单双===>>>单数<<<===开15准

281期:必出单双===>>>双数<<<===开10准

282期:必出单双===>>>单数<<<===开23准

283期:必出单双===>>>双数<<<===开18准

284期:必出单双===>>>单数<<<===开00准