Target Exam

CUET

Subject

-- Applied Mathematics - Section B2

Chapter

Financial Mathematics

Question:

Let us consider an annuity whose periodic payment is ₹R payable at the end of each payment period of 'n' periods, interest paid r% per period or $i=\frac{r}{100},$ so the amount of obligation can be given as _________.

Options:

$A= R\begin{bmatrix}\frac{(1+i)^n-1}{i}\end{bmatrix}$

$A= R\begin{bmatrix}\frac{(1-i)^n-1}{i}\end{bmatrix}$

$A= R\begin{bmatrix}\frac{(1+i)^n}{i}-1\end{bmatrix}$

$A=R\begin{bmatrix}i^{n-1}-1\end{bmatrix}$

Correct Answer:

$A= R\begin{bmatrix}\frac{(1+i)^n-1}{i}\end{bmatrix}$

Explanation:

For an annuity with payment $R$ at the end of each period and interest rate per period $i$ for $n$ periods:

The amount of obligation (future value of annuity) is

$R\left(\frac{(1+i)^n-1}{i}\right)$

The required expression is $R\left(\frac{(1+i)^n-1}{i}\right)$.