Knights and Knaves: Olivia, Eve, Carol, Dave, and Bob
Verified— unique solution
knights knaves
On an island, every inhabitant is either a knight, who always tells the truth, or a knave, who always lies. You meet Olivia, Eve, Carol, Dave, and Bob.
Olivia says: "Eve is a knave."
Eve says: "Olivia is a knave or Carol is a knave."
Carol says: "I am the same type as Dave."
Dave says: "Olivia and Bob are of the same type."
Bob says: "I am the same type as Olivia."
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.
Rate this puzzle
Report a problem with this puzzle
Similar puzzles
Zebra∎ verified
The Three Plots: The Gardener With the Rake, the Gardener Behind the Trellis, and the Gardener Who Waters On Saturday
Three plots stand in a row, numbered 1 to 3 from left to right. Each holds exactly one of each attribute, and no attribute repeats. Work out the full arrangement from these clues: 1. The gardener with the shears is the …
Math∎ verified
Sequence: 3, 5, 9, 15, …
What comes next in this sequence? 3, 5, 9, 15, 23, 33, ?
Math∎ verified
Arithmetic: 2 + 3 - 15 + 7 × 4
What is 2 + 3 - 15 + 7 × 4?
Math∎ verified
Arithmetic: 3 + 18 + 9 - 19 - 4 ÷ 4
What is 3 + 18 + 9 - 19 - 4 ÷ 4?
Math∎ verified
Arithmetic: 3 + 5 + 2
What is 3 + 5 + 2?
Math∎ verified
Arithmetic: 13 + 4 × 4 - 2 + 10
What is 13 + 4 × 4 - 2 + 10?
Comments
No comments yet
Be the first to say something about this puzzle.