In an island peopled by Knights (who always say the truth) and Liars (who obviously always lie), two persons spoke about each other.
A said: "B would say I lie."
B said: "That is true."
Can anything be deduced as to what kind is each of them?
B agrees with A, so B would not say that A lies. Therefore, A is a liar. Since B agrees with A, B is also a liar. They are both liars.
Posted by Math Man
on 2014-08-03 15:03:00