I got most correct, but I need clarification on the best approach for this LG question.
Exactly five high school classes—gym, history, math, physics, and theater—meet one after another on the same day. The following conditions hold:
Three of the classes must meet on the first floor and two on the second floor.
Math and theater must meet on the same floor.
Physics must meet on the first floor and earlier than any class that meets on the second floor.
Theater must meet immediately before history.
End of reading passage.