252期:必出单双===>>>单数<<<===开23准

253期:必出单双===>>>双数<<<===开33错

254期:必出单双===>>>单数<<<===开17准

255期:必出单双===>>>双数<<<===开42准

256期:必出单双===>>>单数<<<===开48错

257期:必出单双===>>>双数<<<===开00准