Newbie level 1
Is it possible to create a XOR gate using two 2-to-1 mux's if you do not have access to A bar or B bar and can not use an inverter or not gate. I think it is impossible, but my professor is convinced otherwise. If A and B are both 1 it seems that it would be impossible to make the output 0 using only a select line, regardless of how many mux's you can use. The only way I can figure out how to do it but it requires opening up the mux and rewiring it, and then it is obviously no longer a multiplexer.