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PA小盘 · 2017年11月08日

问一道题:NO.PZ2015120604000013 [ CFA I ]这一题不太理解,13年年末是14年的年初,N=12不明白

问题如下图:

    

选项:

A.

B.

C.

解释:



2 个答案
已采纳答案

品职辅导员_小明 · 2017年11月09日

同学你好,这道题的解题关键在于你对年金的理解是否到位,建议你在做年金的问题的时候在草稿纸上画出时间轴,这样可以更清楚的表达出时间对于货币的作用。

例如这道题,题目中说是第十三年的年末收到钱,说明此题是ordinary annuity, 后付年金有一个细节点就是,从0到1这一短时间是没有收益的,因为你是第一年年末才投资进去钱,所以计算收益要从第一年年末开始,第一年年末到第二年是第一次,第二年年末到第三年年末是第二次,第三年年末到第四年年末是第三次,以此类推,最后到第十三年年末就是12次。

源_品职助教 · 2017年11月09日

因为第一笔年金现金流发生在第13年的年末,所以用计算器求解的这些现金流的现值PV就发生在第12年的年末,把这一时间点的现金流往前折现12年求得现金流在当前T=0时刻的现值。所以第二步里N=12.

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