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    Question

    Statements: Some keys are locks.

    > Some locks are buttons. No button is a clock. Conclusions: I. Some keys are buttons. II. All locks being keys is a possibility Directions (Q.16-20): In each of the questions below are given two/three statements followed by two conclusions numbered I, and II. 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 if both conclusions I and II follow Correct Answer Incorrect Answer
    B if neither conclusion I nor II follows Correct Answer Incorrect Answer
    C if either conclusion I or II follows. Correct Answer Incorrect Answer
    D if only conclusion II follows. Correct Answer Incorrect Answer
    E if only conclusion I follows. Correct Answer Incorrect Answer

    Solution

    Some keys are locks (I) + Some locks are button (I) ⇒ no conclusion can be drawn. Hence, conclusion I will not follow.
    Some keys are locks (I) ⇒ conversion ⇒ Some locks are keys (I). [Probable conclusion] ⇒ A. Hence, conclusion II will follow.

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