In the teaching of Probability in senior high school lie obvious inadequacies in students' comprehension of Probability definition for Frequency and Equiprobability models. 在高中概率学习中，学生对概率的频率定义与古典概型的理解存在明显的欠缺。
Equiprobability Construction of P_n~((r)) Public Key P_n~((r))公钥的等概率构造
Equiprobability of External Parameter and Inlaid Function in P_n~(r) Public Key P_n~(r)公钥外部参数和嵌套函数的等概率
