9. a) What type of multiplexer shown in a figure below. b) Develop the truth table for multiplexer in figure below. 10. What is the difference between decoder and multiplexer. 11. Design : a. BCD-to-decimal decoder using the minimal number of 2-input AND gates b. Repeat, using two 2-to-4-line decoders and a few interconnecting AND gates 12. Using a full-adder, determine the logic state ( 1 or 0 ) at each gate output for the following inputs: (a) A=1,B=1,Cin=1 (b) A=0,B=1,Cin=1 (c) A=0,B=1,Cin=0 13. What the full-adder inputs that will produce each of the following outputs: (a) =0,Cout=0 (b) =1,Cout=0 (c) =1,Cout=1 (d) =0,Cout=1 14. Determine the outputs of a full-adder for each of the following inputs: (a) A=1,B=0,Cin=0 (b) A=0,B=0,Cin=0 (c) A=0,B=1,Cin=1 (d) A=1,B=1,Ctn=1