Two suspects, A and B, are on trial for shoplifting. Four witnesses are called in during the trial. Below are the witnesses’ testimonies.

1st witness: I know A is innocent!
2nd witness: I know B is innocent!
3rd witness: The facts presented by the first and second witnesses are true.
4th witness: I am very certain that the third witness is lying!

If only the 4th witness is telling the truth, which suspect(s) is/are guilty of shoplifting?

3 answers

A and B.

I don't know

Let me explain. If only the fourth witness is telling the truth, then it means that the first three witnesses are lying. So, we cannot trust their testimonies. Therefore, we cannot conclude anything about the guilt or innocence of either suspect based on the given information. We would need more evidence and testimonies to make a fair judgment.