Question

    Statement : All books are pens. Some

    pens are desks. No desk is a chair. Some chairs are tables. Conclusion: Some chairs are not pens. Some tables may be desks. Some desks may not be pens. No book is desk. . In each of the questions below are given four statements followed by four conclusions. 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 II and III follow Correct Answer Incorrect Answer
    C Only I, II and III follow Correct Answer Incorrect Answer
    D Only I, II and IV follows Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Some pens are desks(I) + No desk is a chair(E)`=>` Some pens are not chairs(O). Hence, conclusion I will not follow. No desk is a chair(E) + Some chairs are tables(I)`=>` Some tables are not desks(O*)`=>` Probable conclusion`=>` Some tables may be desks(I). Hence, conclusion II will follow. Some pens are desks(I)`=>` conversion`=>` Some desks are pens(I)`=>` Probable conclusion`=>` Some desks may not be pens(O). Hence, conclusion III will follow. A + I = no conclusion. Hence, conclusion IV will not follow.

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