问题如下图：
选项：
A. 
B. 
C. 
解释：
答案是C，选的C，讲解也是C。
选了C，然后显示不对。
发亮_品职助教 · 2019年03月01日
这道题应该选B，99.6255。
value=0.5×（102.5/1.028853+ 102.5/1.028853）= 99.6255
原来的答案有错。因为他要求的是Node上的Value，Value是不包括本期Coupon的。
节点上的Value加上Coupon构成本节点的总现金流，这个可以用来往前继续折现。但是本节点的Value，就是后面节点现金流折到本节点的值，不包括本节点Coupon。
这个是原版书的题，协会后面可能修改过，下面是现在的解释：
The bond value at the upper node at Time 1 is closest to 99.6255. The cash flow at Time 2 is 102.5, the redemption of par value (100) plus the final coupon payment (2.5). Using backward induction, we calculate the present value of the bond at the upper node of Time 1 as 102.5/1.028853 = 99.6255.
粉红豹 · 2019年03月01日
老师，按照何老师的说法，题目给的二叉树其他的节点上都是包括coupon的，按理说这个也应该算上coupon啊？
NO.PZ201712110200000203 问题如下 Baseon Exhibits 3 an4, the value of BonC the upper no Time 1 is closest to: A.97.1957 B.99.6255 C.102.1255 B is correct. The bonvalue the upper no Time 1 is closest to 99.6255. The cash flow Time 2 is 102.5, the remption of pvalue (100) plus the fincoupon payment (2.5). Using backwarinction, we calculate the present value of the bonthe upper no of Time 1 102.5/1.028853 = 99.6255. 为啥value不用加coupon, 也可以是time 1付息前的价值啊
NO.PZ201712110200000203问题如下Baseon Exhibits 3 an4, the value of BonC the upper no Time 1 is closest to:A.97.1957B.99.6255C.102.1255B is correct. The bonvalue the upper no Time 1 is closest to 99.6255. The cash flow Time 2 is 102.5, the remption of pvalue (100) plus the fincoupon payment (2.5). Using backwarinction, we calculate the present value of the bonthe upper no of Time 1 102.5/1.028853 = 99.6255.我算出来的是99.9292，跟答案小数差了一点
NO.PZ201712110200000203 问题如下 Baseon Exhibits 3 an4, the value of BonC the upper no Time 1 is closest to: A.97.1957 B.99.6255 C.102.1255 B is correct. The bonvalue the upper no Time 1 is closest to 99.6255. The cash flow Time 2 is 102.5, the remption of pvalue (100) plus the fincoupon payment (2.5). Using backwarinction, we calculate the present value of the bonthe upper no of Time 1 102.5/1.028853 = 99.6255. 请问这个两年的二叉树，拿到coupon+par的这一年是第二年吗？ 我一直以为两年的二叉树是time 0, time 1, time2， 然后time 2之后拿到coupon+par，再用time 2 的利率开始折。
99.6255 102.1255 B is correct. The bonvalue the upper no Time 1 is closest to 99.6255. The cash flow Time 2 is 102.5, the remption of pvalue (100) plus the fincoupon payment (2.5). Using backwarinction, we calculate the present value of the bonthe upper no of Time 1 102.5/1.028853 = 99.6255.看了大家提问的解析，还是没看懂这里为什么不加上2.5的coupon，如果不单列，也不用加上是吧。
99.6255 102.1255 B is correct. The bonvalue the upper no Time 1 is closest to 99.6255. The cash flow Time 2 is 102.5, the remption of pvalue (100) plus the fincoupon payment (2.5). Using backwarinction, we calculate the present value of the bonthe upper no of Time 1 102.5/1.028853 = 99.6255.关于这一条是否加当期的coupon，我没有看懂老师们的解答，我没有在二叉树中看到单列的coupon，所以我这题会选择包含coupon的102.1255，感觉没有明白什么是单列的coupon？