排列三出组三组六的概率是多少

简介：There are now hundreds of dinosaur species in the mercenary space. Qin Fen and others cannot name many of the dinosaur names. However, Qin Fen has also made a good classification. Carnivorous dinosaurs and herbivorous dinosaurs are separated, and among the mercenaries Enough food is prepared in the space to ensure that these guys will not starve to death.