Question $5$

In general, a multiplexer has

One data input, several data outputs, and selection inputs

One data input, one data output, and one selection input

Several data inputs, several data outputs, and selection inputs

Several data inputs, one data output, and selection inputs

Question $6$

The carry output of a half$-$adder circuit can be expressed as

Cout $=AB$

Cout $=A+B$

Cout $=A-B$

Cout $=\frac{A}{B}$