There's a house on Route 18 in Pokémon X & Y, where you can take part in an Inverse Battle once per day. In this battle moves that are usually Super Effective (eg, Fire -> Grass) are Not Very Effective, and moves that are usually Not Very Effective (eg, Water -> Grass) are Super Effective.
How does this affect match-ups that usually do no damage (eg Normal -> Ghost, or Psychic -> Dark)? Do they still do zero damage, or do they now do Super Effective? If the latter, are there any type match-ups that would do zero damage in an Inverse Battle?