题目
A.1
B.4
C.3
D.2
第9题
A.A cfs <- 100 * (rep(couponRate/frequency, n) + c(rep(0, n ),1))
B.B cfs <- 100 * (rep(couponRate/frequency, n-1) + c(rep(0, n - 1),1))
C.C cfs <- 100 * (rep(couponRate/frequency, n) + c(rep(0, n - 1))
D.D cfs <- 100 * (rep(couponRate/frequency, n) + c(rep(0, n - 1),1))
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