1. The problem statement, all variables and given/known data The question asks the circuit's functionality FA = Full Adder 2. Relevant equations 3. The attempt at a solution I got two questions: 1) To understand this circuit functionality should I write it output considering all input possibilities (32 lines)? 2) If the carry out in the last full adder is input in the first full adder, how can I establish an output? What if the last carry out affects the circuit, then changes the output?