b$.$ True$/$False Questions

$[10]$

$($i$)$ For two's complement numbers, the negative of a number can be found by adding one and then inverting the bits.

$($ii$)$ A disadvantage of two's complement numbers is that, unlike a sign$-$and magnitude representation, you cannot tell if a number is negative by looking at only one bit.

$($iii$)$ An $8-$to$-1$ multiplexer requires $2$ select lines,

$($iv$)$ If a wire carries a logical value of $0,$ its voltage level will be $O$ Volts

$($v$)$ A half adder has a carry input