大小单双概率计算公式

简介：Speaking of which, he has a best friend who is from No. 2 Middle School. An Yi often brags to the old fat man about the beauties in the first middle school. The usually honest and honest old fat man is very angry and says that our school also has a cloud of beauties. There is Su Xiaoxiao in front of him and Su Xiaoxiao in the back. There is Fairy Cheng. Although Su Xiaoxiao has transferred to another school, Fairy Cheng is still there.