Question 1: Implement the following Boolean expression with exclusive-OR and AND gates: (10 points) F=ABC+ABCD+ABCD+ABCD Question 2: Construct a BCD adder-subtractor circuit. (10 points) Question 3: Construct a 5-to-32-line decoder with four 3-to-8-line decoders with enable and a 2to-4-line decoder. Use block diagrams for the components. (10 points) Question 4: Write a behavioral description of the circuit shown below and verify that the circuit's output is asserted if successive samples of the input have an odd number of 1s. (20 points)