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

    Question

    (Q.156-160): 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 doors are nuts. All

    nuts are bolts. All bolts are metals. Conclusions: I. Some metals are nuts II. Some bolts are not doors. III. Some metals are doors.
    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 I and III follow Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    All nuts are bolts.(A) + All bolts are metals. (A) = All nuts are metals (A) ⇒ conversion ⇒ Some metals are nuts.(I), Hence, conclusion I follows. All doors are nuts.(A) + All nuts are bolts.(A) = All doors are bolts. (A) All doors are bolts. (A) + All bolts are metals.(A) = All doors are metals.(A) ⇒ conversion ⇒ Some metals are doors. (I), Hence, conclusion III follows.

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