老师好,讲义中“The preferred dividen is higher than the common dividend”,那为什么公司盈利还要将优先股转换为普通股呢?谢谢!
已回答
Combination 组合 nCr=n! / r!*(n-r)! select r from n item, when order of slection not important
Permutation 排列 nPr=n! / (n-r)! how many different groups of size r in specific order can be chosen from n objects
这两句如何理解?能分别举个例子不?谢谢!