Statement A: Both fathers always tell the truth or both fathers always lie.

Statement B: One son always tells the truth and one son always lies.

Statement C: Statement A and Statement B are not both lies.

Here are a few facts given related to the statements above and the men who made them:

(i) Albert made one of the statements, his father made another of the statements, and his son made the remaining statement.

(ii) Each father and son mentioned in the statements refers to one of the three men.

(iii) Each man either always tells the truth or always lies.

Which statement – A, B or C – was made by Albert?

Methinks Albert the Liar said statement A. His father and son are both truthtellers.

A is false, because one father (Albert's) is a truthteller, and the other (Albert) lies. B is true, because Albert lies but his son doesn't. So C is true as well. It doesn't matter which of the other two said B and which said C.

Posted by pleasance on 2003-01-27 05:45:30