New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    In the question below there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts.

    Statements: Some machine are tool. All tool

    are screw. No screw is nut. Some machine are ladder. Conclusions: I. Some ladder are tool. II. Some machine are screw. III. No tool is nut.
    A Both conclusion I and conclusion II follow Correct Answer Incorrect Answer
    B Only conclusion I follows Correct Answer Incorrect Answer
    C Neither conclusion I nor conclusion II follows Correct Answer Incorrect Answer
    D Both conclusion II and conclusion III follow Correct Answer Incorrect Answer
    E All the conclusion I, II and III follow Correct Answer Incorrect Answer

    Solution

    Some machine are tool (I) → Conversion → Some tool are machine (I) + Some machine are ladder (I) → No conclusion. Hence conclusion I does not follow.

    Some machine are tool (I) + All tool are screw (A) → Some machine are screw (I). Hence conclusion II follows.

    All tool are screw (A) + No screw is nut (E) → No tool is nut (E). Hence conclusion III follows.

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