5.A body of a dead man has been found at a location lying on the ground, blood is dripping from his head. A tape recorder and a gun is also in one of his hands. A researcher retrieves the tape recorder and play a recorded message.
The recorded message which was in the voice of the dead man says that he is tired of his life and just wanted to get out of it. Then a gunshot can be heard. After listening it, the researcher declared it as a murder case.
How does he know?
Answer is the man clearly couldn’t have killed himself because if he really killed himself after the recording. So who rewind the recording in the tape?
Source : providr