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    Question

    In the question below some statements are given followed by three conclusions 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 the given conclusion definitely follows from the given statements, disregarding commonly known facts.

    Statements:

    All KO is JK.

    Some JK is RF.

    No RF is VD.

    Conclusions:

    I. Some KO is RF.

    II. Some RF is not VD.

    III. Some JK is not VD.

    A Only conclusion II follows Correct Answer Incorrect Answer
    B Only conclusion I and II follow Correct Answer Incorrect Answer
    C Only conclusion II and III follow Correct Answer Incorrect Answer
    D Only conclusion III follows Correct Answer Incorrect Answer

    Solution

    All KO is JK (A) + Some JK is RF (I) → No conclusion. Hence conclusion I does not follow. No RF is VD (E) → Conversion →  Some RF is not VD (O). Hence conclusion II follows. Some JK is RF (I) + No RF is VD (E) → Some JK is not VD (O). Hence conclusion III follows.

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