Question

    In each question below are given some statements followed by some conclusions numbered I, II, etc are given. You have to take the 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 given statements, disregarding commonly known facts.

    Statements: All signals are mobile. Some

    mobile are expensive. All expensive are rare. Conclusion: I. Some expensive are not signal. II. Some rare are mobile. III. Some signal are rare.
    A Only I and III follow Correct Answer Incorrect Answer
    B Only II and III follow. Correct Answer Incorrect Answer
    C Only II follows Correct Answer Incorrect Answer
    D All follow Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    All signals are mobile(A) + Some mobile are expensive(I) ⇒ No conclusion. Hence conclusion I and III does not follow. Some mobile are expensive(I) + All expensive are rare(A) ⇒ Some mobile are rare(I). Hence conclusion II follows.

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