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Unformatted text preview: 2. test the validity. b. All A are B All B are C Some C are D So, All A are D A very special island is inhabited only by knights and knaves. Knights always tell the truth, and knaves always lie. We have the following argument: It is not the case that Bin is a knave or Kelvin is a knight. If Allen is a knave then Bin is a knight. Kelvin is a knight or Allen is a knight. Therefore, Kelvin is a knave. a. Using the truth table, check the validity of this argument. b. Is Bin a knight?...
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- Spring '09