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    Question

    Statements: All chairs are tables. All

    tables are benches. All benches are desks. Conclusions: I. All desks may be benches. II. Some benches are not desks. III. All benches are chairs. (Q.156-160): 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 Only I follows Correct Answer Incorrect Answer
    B Only II and III follow Correct Answer Incorrect Answer
    C Only I and III follow Correct Answer Incorrect Answer
    D All follow Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    All benches are desks (A) ⇒ conversion = Some desks are benches (I) ⇒ possible concl. ⇒ All desks may be benches (A). Hence, I follows. Here, all the given statements are positive statements and conclusion II is a negative conclusion. As we know that no negative define conclusion can be drawn from the positive statement, we can say that conclusion II will not follow. All chairs are tables.(A) + All tables are benches.(A) = All chairs are benches.(A) ⇒ conversion ⇒ Some benches are chairs.(I), Hence, conclusion III does not follow.

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