The simple and compound interests on a sum of money for $2$ years are ₹ $8400$ and ₹ $8652$ respectively. The rate of interest per annum is (In $\%$)

What sum will give ₹ $244$ as the difference between simple interest and compound interest (In ₹) at $10 \%$ in $1 \frac{1}{2}$ years compounded half-yearly?

If a sum of money at compound interest amounts to thrice itself in $3$ years, then in how many years will it be $9$ times itself?

Find the compound Interest on $Rs. 32000$ at $20 \%$ per annum for $1$ $year$, compounded half yearly (In $Rs.$)

The compound interest (In ₹) on ₹ $2000$ at $5 \%$ per annum, compounded yearly, for $2$ years is

The $S.I.$ is $Rs. 7200$ on $12$ $p.c.p.a.$ for $6$ years on a sum. What is $C.I.$ (In $Rs.$) on $5$ $p.c.p.a$ for $2$ years?