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Unformatted text preview: people, A and B. Determine, if possible, what A and B are if they address you in the way described. If you cannot determine what these two people are, can you draw any conclusions? a) A says “At least one of us is a knave” and B says nothing. b) A says “We are both knaves” and B says nothing. Exercise 4 This exercise relates again to the inhabitants of the island created by Smullyan, except that this time there are three types of inhabitants, knights that always tell the truth, knaves that always lie, and spies that may tell the truth of lie. You encounter three people, A, B, and C and you know that one is a knight, one is a knave, and one is a spy. Determine, if possible, what A, B, and C are if they address you in the way described. If you cannot determine what these three people are, can you draw any conclusions? PA: A says ``C is a knave" PB: B says ``A is the knight" PC: C says ``I am the spy"...
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 Fall '15
 whitaker
 2 Week, Smullyan, Knights and Knaves

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