排列三出组三组六的概率是多少

简介：As the back door of the imperial palace, the Xuanwu Gate was used by the Empress of the Ming Dynasty to enter and exit during her wedding ceremony. At the same time, this is also the special door for concubines and royal personnel to enter and exit the palace. When the emperor went on a tour, he could leave the palace through the Meridian Gate, but the accompanying concubines had to leave the palace through the Xuanwu Gate. If the emperor follows the empress dowager out of the palace, he will go out of Xuanwu Gate together.