There is an island where every inhabitant is either of Type X or Type Y. One of the types always tells the truth, and the other type always lies, but you are not sure which is which. You meet two inhabitants of this island, A and B.
A: B is of Type X.
B: We are both of Type Y.
Which type tells the truth, which type lies, and what are A and B?

A tells the truth ,being y

 B lies, being  x and telling that they both lie

Posted by Ady TZIDON on 2011-01-04 18:41:00