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

    Question

    In each of the question below are given some statements followed by some conclusions. 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 the given conclusions logically follows from the given statements, disregarding commonly known facts.

    Statements: All Moon is Sky. Only a few

    Sky is Sun. Only a few Sun is Earth. No Earth is Stars. Conclusions: I. Some Sun not being Moon is a possibility. II. Some Moon being Earth is a possibility. III. Some Sky not being Stars is a possibility.
    A Only conclusion II follows. Correct Answer Incorrect Answer
    B Both conclusion I and II follow. Correct Answer Incorrect Answer
    C Only conclusion III follows. Correct Answer Incorrect Answer
    D Both conclusion II and III follow. Correct Answer Incorrect Answer
    E All follow. Correct Answer Incorrect Answer

    Solution

    All Moon is Sky (A) + Some Sky is Sun (I) → Some Sun may not be Moon (O). Hence conclusion I follows. All Moon is Sky (A) + Some Sky is Sun (I) → Probable conclusion → Some Moon is Sun (I) + Some Sun is Earth (I) → Probable conclusion → Some Moon may be Earth (I). Hence conclusion II follows. Some Sky is Sun (I) + Some Sun is Earth (I) → Probable conclusion → Some Sky is Earth (I) + No Earth is Stars (E) → Probable conclusion → Some Sky may not Stars (I). Hence conclusion III follows. Alternate Method -

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