问题如下图：直接用计算器按IRR是算不出来对吗，
选项：
A. 
B. 
C. 
解释：
NO.PZ2016021705000005问题如下Kim Corporation is consiring investment of 750 million won with expecteafter-tcash inflows of 175 million won per yefor seven years. The requirerate of return is 10 percent. Whis the project’s:NPV?IRR? A.102 million won 14.0%B.157 million won 23.3% C.193 million won 10.0% A is correct.The NPV=−750+ ∑ t=1 7 175 1.10 t =−750+851.97=101.97 NPV=−750+∑t=171751.10t=−750+851.97=101.97NPV=-750+\sum_{t=1}^7\frac{175}{{1.10}^t}=-750+851.97=101.97NPV=−750+∑t=171.10t175=−750+851.97=101.97million won. The IRR, founwith a financicalculator, is 14.02 percent. (The PV is −750, N = 7,anPMT = 175.) 计算器算不对，请问老师可以说明下吗？
NO.PZ2016021705000005问题如下Kim Corporation is consiring investment of 750 million won with expecteafter-tcash inflows of 175 million won per yefor seven years. The requirerate of return is 10 percent. Whis the project’s:NPV?IRR? A.102 million won 14.0% B.157 million won 23.3% C.193 million won 10.0% A is correct.The NPV=−750+ ∑ t=1 7 175 1.10 t =−750+851.97=101.97 NPV=−750+∑t=171751.10t=−750+851.97=101.97NPV=-750+\sum_{t=1}^7\frac{175}{{1.10}^t}=-750+851.97=101.97NPV=−750+∑t=171.10t175=−750+851.97=101.97million won. The IRR, founwith a financicalculator, is 14.02 percent. (The PV is −750, N = 7,anPMT = 175.) 计算机cf0是-750后面175每期为7个算出来为啥是450，能出一个计算机的过程吗
老师，计算器中CFo需要按负号吗？是否需要区别现金流方向？
里NPV won是什么意思
