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    Question

    Read the given statements and conclusions carefully.

    Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All gabions are walls. All concretes are walls. All bridges are walls.  Conclusions: (I) Some bridges are gabions. (II) Some concretes are bridges. 
    A Neither conclusion (I) nor (II) follows Correct Answer Incorrect Answer
    B Only conclusion (I) follows Correct Answer Incorrect Answer
    C Both conclusions (I) and (II) follow Correct Answer Incorrect Answer
    D Only conclusion (II) follows Correct Answer Incorrect Answer

    Solution

    All gabions are walls (A) + [All bridges are walls (A) → conversion] → Some walls are bridges (I) → No conclusion. Hence conclusion I does not follow. All concretes are walls (A) + + [All bridges are walls (A) → conversion] → Some walls are bridges (I) → No conclusion. Hence conclusion II does not follow.

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