1. The problem statement, all variables and given/known data Using a truth table and a karnaugh map, build a minimized circuit (using only AND and OR gates) to have an output if and only if any two inputs A,B,C,D are true (let true = 1, false = 0). 2. Relevant equations karnaugh maps. 3. The attempt at a solution My only question about this is: will there be an output with more than two inputs being true (1) or will there only be an output when exclusively two inputs are true? Normally "if and only if" means if P then Q, and if Q then P. But, I'm tripping myself up with the language. Obviously, the two situations would have very different circuits.