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

    Question

    In each of the questions below are given three statements followed by three conclusions numbered 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 given conclusions logically follows from the given statements disregarding commonly known facts .

    Statements: All eggs are trays. No tray

    is a white. Some whites are ducks. Conclusions: I. Some ducks are not eggs. II. No white is a tray. III. All whites are ducks.
    A None follows Correct Answer Incorrect Answer
    B Only I and II follow Correct Answer Incorrect Answer
    C Only II and III follow Correct Answer Incorrect Answer
    D Only I and III follow Correct Answer Incorrect Answer
    E All follow Correct Answer Incorrect Answer

    Solution

    All eggs are trays(A) + No tray is a white(E) ⇒ No egg is a white (E) + Some whites are ducks(I) ⇒ Some ducks are not eggs(O*). Hence conclusion I follow. No tray is a white(E) ⇒ Conversion ⇒ No white is a tray(E). Hence conclusion II follows. Some whites are ducks (I) ⇒ Conversion ⇒ Some ducks are whites(I). Hence conclusion III does not follow.

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