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      Question

      Statement : Some copies are pens. No diary is a

      copy All pens are scales. Conclusion : I. At least some copies are definitely scales. II. At least some pens are not diaries. III. No scale is a pen. In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.
      A None follows Correct Answer Incorrect Answer
      B I, II and III follow Correct Answer Incorrect Answer
      C II and III follow Correct Answer Incorrect Answer
      D I and II follow Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Some copies are pens. (I) + All pens are scales (A) ⇒ Some copies are scales (I) . Hence conclusion I follows. No diary is a copy (E) + Some copies are pens(I) ⇒ Some pens are not dairies (O*). Hence conclusion II follows. All pens are scales(A) ⇒ Conversion ⇒ Some scales are pens(I). Hence conclusion III does not follow.

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