SSC JE Civil Engineering 30-Oct-2020 Shift 2 Paper

Concepts:
The sinking fund factor is given as:
$\mathrm{SFF}=\frac{\mathrm{i}}{{\left(1+\mathrm{i}\right)}^{\mathrm{n}}-1}$
Where,
i is the rate of interest (annually) and n is the design life in years.
Calculation:
Given: i = 4% and n = 5 years
$\mathrm{SFF}=\frac{0.04}{{\left(1+0.04\right)}^5-1}$
$\Rightarrow \mathrm{SFF}=0.184$
Other type of Factors: In all above, ‘i’ is the rate of interest (annually) and ‘n’ is the design life in years.