It is generally known that lecturers for some course either always tell the truth or always lie. Arthur and Ignaz are those lecturers. Arthur says: "Exactly one of us is lying". Ignaz says: "Arthur is telling the truth". Which is the case? who is telling the truth and who is lying.
00:00 - 13:0013:00 - 00:00
00:00 - 13:0013:00 - 00:00