$2-1.$ Convert these binary numbers to decimal.

$($a$)100110$

$($b$)10010101$

$($f$)01101111$

$($j$)1101$

$($c$)100100001001$

$($g$)*1111010111$

$($k$){?}^{***}111011$

$($d$)01101011$

$($h$)11011111$

$($l$)1010101$

$2-2.$ Convert the following decimal values to binary.

$($a$)37$

$($e$){?}^{***}77$

$($b$)13$

$($f$)390$

$($i$)*511$

$($c$)*189$

$($g$)*205$

$($j$)25$

$($d$)1000$

$($h$)2133$

$($k$)52$

$($l$)47$

$2-3.$ What is the largest decimal value that can be represented by $($a$){?}^{***}$ an eight$-$bit binary number? $($b$)$ A $16-$bit number?