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      Question

      Statements: Some chalks are wires. No

      wire is pole. Some poles are irons . Conclusions: I. No pole is a wire. II. Some irons are not wires. III. Some chalks are iron. In each of the questions below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts .
      A None follows Correct Answer Incorrect Answer
      B Only I and II follow Correct Answer Incorrect Answer
      C Only II and III follow Correct Answer Incorrect Answer
      D Only I and III follow Correct Answer Incorrect Answer
      E All follow Correct Answer Incorrect Answer

      Solution

      No wire is a pole (E) ⇒ Conversion ⇒ No pole is a wire (E). Hence conclusion I follow. No wire is pole(E) + Some poles are irons (I) ⇒ Some irons are not wires(O*). Hence conclusion II follows. Some chalks are wires(I) + No wire is pole(E) ⇒ Some chalks are not poles (O) + Some poles are irons(I) ⇒ No conclusion. Hence conclusion III does not follow.

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