游戏奖池计算，非常重要的算法哦。 如果概率是5 ，也就是说100个编号1-100的球，其中有5个编号对应的是红色，其余对应的白色，那么任选一个编号，为红的概率是5 。-Game prize pool, very important algorithms Oh. ' If the probability is 5 , that is 100 No. 1-100 balls, including five numbers correspond to the red, the rest of t