Colegii se uita unul la altul. Mai exact, Radu, care este pasionat de jocuri de logica se uita la Miruna, iar Miruna se uita la Andreea, care nu este pasionata de jocurile logice. Puteti spune cu exactitate daca un coleg pasionat de jocuri logice se uita la un alt coleg care nu este pasionat de jocurile logice?
Sursa: Scientific American (adaptare Ruxandra F. Olimid)
The colleagues look at each other. In particular, Radu, who has logic puzzles as hobby, looks at Miruna, and Miruna looks at Andreea, who does not have logic puzzles as hobby. Can you tell if a person who has logic puzzles as hobby is looking at another colleague who does not have logic puzzles as a hobby?
Source: Scientific American (adaptation Ruxandra F. Olimid)