1到12选2个数有多少种组合

简介：Master Qiu Jiu, whose brows twitched, looked at Xiao Xiaobai's cold expression, but couldn't help but trembled in silence. As a senior local master, Qiu Jiuye is not a good person. Whether it is him or Tieshan, there are actually lives on his hands. The large and small tombs they had stolen together were enough for them to die ten times.