Sort of related here, but one of the fine points in capital budgeting is the difference between payback and discounted payback. I got a couple of practice questions wrong because I was always doing discounted payback, then I finally started looking for the word "discounted". I noticed on the test that they asked a payback question and did NOT indicate that it should be discounted. Obviously they had an answer choice for both, but I went with undiscounted since it didn't indicate otherwise.