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    Question

    Statements : All squares are circles. No

    circle is a tangent. Some tangents are perpendiculars. Conclusions : I. Some perpendiculars are circles. II. Some perpendiculars are not circles. III. All perpendiculars may be tangents. 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 circle is a tangent(E) + Some tangents are perpendiculars (I) ⇒ Some perpendiculars are circles (O*). Hence, conclusion I does not follow but conclusion II follows. Some tangents are perpendiculars (I) ⇒ Probable conclusion ⇒ All perpendiculars may be tangents (A). Hence, conclusion III follows.

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