I interview people. I don't care at all that they make a mistake. I want to get into the candidates train of thought, and see how they react to feedback. If you

I interview people. I don't care at all that they make a mistake. I want to get into the candidates train of thought, and see how they react to feedback. If you made a mistake like that it would be excellent for that purpose. You showed comprehension of lists and basic problem solving, so you're already ahead of the midfield.