There are 2 questions.

Design a BCD-to-decimal decoder using the unused combinations of the BCD code as don't-care conditions. Construct a 5-to-32-line decoder with four 3-to-8-line decoders with enable and a 2-to-4-line decoder. Using a decoder and external gates, design the combinational circuit defined by the following three Boolean functions: a) F1=xyz+xz b) F1=(y+x)z c) F2=xyz+xy d) F2=yz+xy+yz e) F3=xyz+xy