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    Question

    Read the given statements and conclusions carefully.

    Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements . Statement: No DF is RF. Some DF are JN. All JN are XS. Conclusions: I. Some XS are DF. II. No JN is RF. III. Some XS are JN.
    A Only conclusion I follows Correct Answer Incorrect Answer
    B Only conclusions III follows Correct Answer Incorrect Answer
    C Only conclusions II and III follow Correct Answer Incorrect Answer
    D Only conclusions I and III follow Correct Answer Incorrect Answer

    Solution

    Some DF are JN (I) + All JN are XS (A) → Some DF are XS (I) → Conversion → Some XS are DF (I). Hence conclusion I follows. No DF is RF (E) → Conversion → No RF is DF (E) + Some DF are JN (I) → Some JN is not RF (O). Hence conclusion II does not follow. All JN are XS (A) → Conversion → Some XS are JN (I). Hence conclusion III follows.

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