What will be $C.I.$ (in $Rs.$) on an amount of $Rs. 10000$ at the rate of $20$ $p.c.p.a.$ in two years if the interest rate is compounded half-yearly?

If the compound interest on a certain sum for $2$ $years$ at $3 \%$ per annum is $Rs. 101.50$,then the simple interest (in $Rs.$) on the same sum at the same rate and for the same time will be:

Nikita invested ₹ $8000$ for $3$ years at $5 \%$ $C.I.$ in a post office. If the interest is compounded once in a year,what sum (in ₹) will she get after $3$ years?

What would be the compound interest (in $Rs.$) accrued on an amount of $Rs. 7400$ at $13.5$ $p.c.p.a.$ at the end of $2$ years? (rounded off to two digits after decimal)

If $Rs. 1200$ amounts to $Rs. 1323$ in $2$ years at compound interest compounded annually,what will $Rs. 1600$ amount (in $Rs.$) to in $3$ years at the same rate?

Find the difference between $S.I.$ and $C.I.$ (in $Rs.$) at $12 \%$ per annum for $2$ years on $Rs. 10000$.