Yes, um no, I mean, right answer, wrong reason. First off, they tell you they have a Cu solution, then they dump an excess
of iron into it. The word equilibrium is a trick here, equilibrium doesn't matter when you are in excess. Also, the reaction:
+ Fe3+(I think) *EDIT* and I'm wrong, see below
is not an equilibrium, this was driven completely to the right, because it is a precipitation. Then they filter, so, all this work, just to say, "A solution of Fe3+
." *EDIT* Wrong again
Then they stick two electrodes, into the same tube, no salt bridge, and ask for potential. That simply won't work.
Presumably, they gave you electrode potentials on a header to this entire exam, or you looked them up, but they might have provided them for you just for this question. In which case ...
They've tricked you.
Look at all the work you've done, and I've done. The answer was zero, for very fundamental (that's my polite way of saying: basic, first day of class) reasons.
If this is a standardized test, or if your teacher gives you a lot of these, put some work into finding these trick questions, so you can maximize your grade.