请老师解释一下这道题

14. Wilson Flannery is concerned that this project has multiple IRRs. Year 0 1 2 3 Cash flows −50 100 0 −50 How many discount rates produce a zero NPV for this project? A. One, a discount rate of 0 percent. B. Two, discount rates of 0 percent and 32 percent. C. Two, discount rates of 0 percent and 62 percent. 计算器只能算出来一个IRR，请问还有一个IRR怎么计算的？

13. Consider the two projects below. The cash flows as well as the NPV and IRR for the two projects are given. For both projects, the required rate of return is 10 percent. Year 0 1 2 3 4 NPV IRR (%) Project 1 −100 36 36 36 36 14.12 16.37 Project 2 −100 0 0 0 175 19.53 15.02 What discount rate would result in the same NPV for both projects? A. A rate between 0.00 percent and 10.00 percent. B. A rate between 10.00 percent and 15.02 percent. C. A rate between 15.02 percent and 16.37 percent. 请问这道题的Cross rate 怎么算？

基金经理为什么会担心extension risk?

老师，为什么要选不相关的对方？

老师，EAR就是EAY，HPR就是HPY吗

请问老师，这题为什么把g设为0了呢？是preferred stock是没有股利增长的吧？对嘛？

老师好，本题出错了吧？dividend paid most recently 应该是3？而不是0.3？

老师好，after tax cost of retained earnings Q24是不是等于 cost of equity capital。Q25。完全没看见tax啥事，用的都是ggm。

请问老师，13题14题怎么计算出答案呢？