>That's an easy one.
>They three will say that they are blue (the liers should lie) then Fred, when he says that ned said that he's blue is telling the truth, then they both are blue! (Ned and Fred)
>
>Victor

This is a bogus teaser! What person on an island wouldn't lie to get rescued? They will all say they are blue. How do you determine blueness versus redness? And then again, if two are blue and are rescued and the red one is left behind, he will immediately become "blue."<g> So the answer is they are all blue, including the red one/ones.

John