$($a$)$ What is the smallest unsigned $16-$bit number in decimal? $0$

$($b$)$ What is the largest unsigned $16-$bit number in decimal? $65535$

$($c$)$ What is the smallest unsigned $16-$bit number in hexadecimal? $00000$

Enter a hexadecimal number with four digits and the leading $0x,$ e$.$g$.,012AB.$

$($d$)$ What is the largest unsigned $16-$bit number in hexadecimal? Ox ffFF

Enter a hexadecimal number with four digits and the leading $0x,$ e$.$g$.,012AB.$