1. To implement the expression ABCD+ABCD, we need one OR gate and A. three inverter gates. B. three AND gates C. two AND gates and three imverters. D. three AND gates and two inverters 2. Function F in the shown figure is equivalent to A) F=AB+AB B) F=AB+AB c) F=AB+AB D) None of the above 3. The circuit in figure 2 is equivalent to 4. Use the shown circuit, what is the value of Z when x1x0=01 and y1y0=10 A. 0 B. I C. Either 0 or 1 D. Other