$1\mathrm{.}0$ Represent $50000$ and $-3650$ as signed $16-$bit numbers $(21$ complement representation$)$

$2\mathrm{.}0$ Conver the fecimal number $92929$ to unsigned binary in two ways. $($a$)$ convert directly to binary; $($b$)$ convert first to hexad cimal and then from hexadecimal to binary. Which method is faster?