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

    Question

    In each of the questions below are given four 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: No cabin is a room. All

    rooms are houses. No house is a flat. Some flats are apartments. Conclusions: I. Some flats are not rooms. II. Some apartments may be rooms. III. All flats being house is a possibility.
    A Only I and II follows Correct Answer Incorrect Answer
    B Only II follows Correct Answer Incorrect Answer
    C Only II and III follows Correct Answer Incorrect Answer
    D Only III follow Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    All rooms are houses. (A) + No house is a flat. (E) = No room is a flat. (E) ⇒ conversion ⇒ Some flats are not rooms(O). Hence, conclusion I follows. All rooms are houses. (A) + No house is a flat. (E) = No room is a flat. (E) + Some flats are apartments. (I) ⇒ Some apartments are not rooms. (O) ⇒ probable conclusion ⇒ Some apartments may be rooms. (I) Hence, conclusion II follows. No house is a flat. (E) ⇒ conversion ⇒ Some flats are not houses. (O) ⇒ probable conclusion ⇒ Some flats may be houses. (I) Hence, conclusion III does not follows.

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