IKMC 2018 - Grades 7-8 - Self-study Question 14

Question 14

A lion is hidden in one of three rooms. A note on room 1 reads “The lion is here”. Room 2 reads “The lion is not here”. Room 3 reads “2 + 3 = 2 × 3”. Only one of these sentences is true. In which room is the lion hidden?

In room 1.
In room 2.
In room 3.
It may be in any room.
It may be in either room 1 or room 2.