The compound interest (In ₹) on ₹ $800$ in $2 \frac{1}{2}$ years at $5 \%$ is
$105.05$
$104.05$
$106.05$
None of these
The difference between the simple interest on a certain sum at the rate of $10 \%$ per annum for $2$ years and compound interest which is compounded every $6$ months is ₹ $124.05$ . What is the principal (In ₹) ?
The population of a state increases by $10 \%$ every year. If its population in the year $2003$ was $15$ lakhs, what was its population in the year $2005$ (in $lakhs$)?
Find the compound interest on $Rs. 12500$ at $8 \%$ per annum for $9$ months compounded quarterly (In $Rs.$)
A sum of money, deposited at some rate $p.c.p.a.$ of compound interest, doubles itself in $4$ years. In how many years will it become $16$ times of itself at the same rate?
A certain sum will amount to ₹ $12,100$ in $2$ years at $10 \%$ per annum of compound interest, interest being compounded annually. The sum is (In ₹)