Question: 5. Design a combinational circuit that forms the binary sum of two 2-bit numbers A1A0 and B1B0. Do not use half-adder or full adders. (Hint:

5. Design a combinational circuit that forms the binary sum of two 2-bit numbers A1A0 and B1B0. Do not use half-adder or full adders. (Hint: design circuit starting with a truth table)
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