1. The problem statement, all variables and given/known data See figure. 2. Relevant equations 3. The attempt at a solution I tried breaking the circuit down into a bunch of small logic gates but I'm having a tough time putting things back together into one big circuit. (One boolean expression) So far I've determined that the left-most part of the circuit is a NAND gate and the right-most part is a NOR gate. I'm still not to sure how C comes into play, but I tried to determine when exactly C is accessed. (See figure) Is there an efficient (preferably somewhat systematic) way of solving these types of problems? Any help/tips/suggestions would be greatly appreciated!