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

    Question

    Read the given statements and conclusions carefully.

    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: All Twilight are Star. All Asteroid are Comet. No Asteroid is Twilight. Conclusion: I. Some Star are not Asteroid. II. Some Comet are not Twilight. III. All Twilight are Comet.
    A Only conclusions I and II follow Correct Answer Incorrect Answer
    B Only conclusions I and III follow Correct Answer Incorrect Answer
    C All the conclusions follow Correct Answer Incorrect Answer
    D Only conclusion II and III follow Correct Answer Incorrect Answer

    Solution

    No Asteroid is Twilight (E) + All Twilight are Star (A) → Some Star are not Asteroid (O*). Hence conclusion I follows. All Asteroid are Comet (E) → Conversion → Some comet are Asteroid (I) + No Asteroid is Twilight (E) → Some comet are not Twilight (O). Hence conclusion II follows but conclusion III does not follow.

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