Knights and Knaves: Judy, Eve, Alice, Frank, and Carol
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knights knaves
On an island, every inhabitant is either a knight, who always tells the truth, or a knave, who always lies. You meet Judy, Eve, Alice, Frank, and Carol.
Judy says: "Frank is a knight."
Eve says: "Carol is a knave and I am a knight."
Alice says: "Carol is a knight and Frank is a knight."
Frank says: "Alice is a knight and Eve is a knave."
Carol says: "Eve is a knight."
Who is a knight and who is a knave?
Hints
Hint 1
Hint 2
Hint 3
Solution
Commit an attempt to unseal the proof. Write your answer — right or wrong, thinking it through is the point.
Once you've worked out who is who: how many of the 5 inhabitants are knaves? Answer with the number.
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