Question 2 Consider two four bit numbers A and B, where either both the numbers are even or both of them are odd. Construct a combinational circuit which will perform the following operations:
If A and B are both even, calculate A+B, else calculate A-B.

Question 3
Build the following function using only 8x1 Mux: F(a, b,c, d,e) = ∑ (0, 4, 8, 16, 17, 20, 22, 24, 25, 31)
[NB: Must show MSB & LSB]
[NB: The circuit should be cost efficient. Meaning, try to use lowest number of ICs possible for an optimum design]