Question $5$: Implement the Boolean function using suitable $8-1$ multiplexer F$($A$,$B$,$C$,$D$)={\displaystyle \underset{?}{\overset{?}{}}}m(0,1,2,3,8,12,13,14,15)$

Question $6$: Use decoder to implement $f(a,b,c,d)={\displaystyle \underset{?}{\overset{?}{}}}m(1,5,9,11,13)$

Question $7$: Use ROM to implement Boolean functions in questions $5$ and $6.$