单项选择题
◎下列表达式不正确的是( )。
A.(P/A,10%,3)=(P/F,10%,1)+(P/F,10%,2)+(P/F,10%,3)
B.利率为10%,期数为3的预付年金现值系数=1+(P/F,10%,1)+(P/F,10%,2)
C.(P/A,10%,3)=[1-(P/F,10%,3)]/10%
D.(P/A,10%,3)=[(P/F,10%,3)-1]/10%
正确答案:D
答案解析:(P/A,10%,3)=(1+10%)-1+(1+10%)-2+(1+10%)-3=(P/F,10%,1)+(P/F,10%,2)+(P/F,10%,3);利率为10%,期数为3的预付年金现值系数=1+(1+10%)-1+(1+10%)-2=1+(P/F,10%,1)+(P/F,10%,2);(P/A,10%,3)=[1-(1+10%)-3]/10%=[1-(P/F,10%,3)]/10%.
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