$2^{16}-1$ is divisible by

For any integral value of $n$,$3^{2n} + 9n + 5$ when divided by $3$ leaves the remainder:

$\frac{1}{4}$ of $\frac{1}{2}$ of $\frac{3}{4}$ of $52000 = ?$

The price of commodity $X$ increases by $40 \text{ paise}$ every year,while the price of commodity $Y$ increases by $15 \text{ paise}$ every year. If in $2001$,the price of commodity $X$ was $Rs. 4.20$ and that of $Y$ was $Rs. 6.30$,in which year will commodity $X$ cost $40 \text{ paise}$ more than commodity $Y$?

Let $x$ be the smallest number,which when added to $2000$ makes the resulting number divisible by $12, 16, 18$ and $21$. The sum of the digits of $x$ is

$74.01 \%$ of $1301 + 9.99 \%$ of $1901 = ?$