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

    Question

    In the question below some statements are given

    followed by three conclusions 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 the given conclusion definitely follows from the given statements, disregarding commonly known facts. Statements: Some Lawns are Prawns. All Prawns are Fishes. No Fish is Whale. Conclusions: I. Some Prawns are Fish. II. Some Lawns are Whale. III. No Whale is Prawn.
    A Only Conclusion I follows. Correct Answer Incorrect Answer
    B Only Conclusions I and III follows Correct Answer Incorrect Answer
    C Only Conclusion III follows Correct Answer Incorrect Answer
    D Only Conclusion II follows Correct Answer Incorrect Answer

    Solution

    All Prawns are Fish (A) →I.I. → Some Prawns are Fishes (I). Hence conclusion I follows. Some Lawns are Prawns (I) + All Prawns are Fishes (A) → Some Lawns are Fishes (I) + No Fish is Whale (E) → Some Lawns are not Whale (O). Hence conclusion II does not follows. All Prawns are Fishes (A) + No Fish is Whale (E) → No Prawns is Whale (E) → Conversion → No Whale is Prawns (E). Hence conclusion III follows.

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