A hotel manager is assigning rooms 1-6 to a group of six guests--Lana, Mitchell, Nora, Oscar, Padraig, and Quentin. Quentin has a lower numbered room than Mitchell. Oscar has a lower numbered room than Lana and Padraig. Rooms 5 and 6 are not taken by Quentin, Lana, or Nora.
What is a complete and accurate list of the rooms any one of which could be assigned to Oscar?
1, 2, 3
Because Oscar must be a lower numbered room than Lana and Padraig, he can't be assigned to room 5 or 6. That leaves only Mitchell and Padraig for those two rooms. Next, Oscar can't be assigned to room 4 because Lana must be in a higher numbered room than him. So, Oscar can only go in room 1, 2, or 3.