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    Question

    Statements: Some trucks are buses.

    > All buses are cars. All cars are bikes. Conclusions: I. Some trucks are bikes. II. Some cars may not be a buses. Directions (Q.16-20): In each of the questions below are given two/three statements followed by two conclusions numbered I, and II. 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.
    A if both conclusions I and II follow Correct Answer Incorrect Answer
    B if neither conclusion I nor II follows Correct Answer Incorrect Answer
    C if either conclusion I or II follows. Correct Answer Incorrect Answer
    D if only conclusion II follows. Correct Answer Incorrect Answer
    E if only conclusion I follows. Correct Answer Incorrect Answer

    Solution

    Some trucks are buses (I) + All buses are cars ⇒ Some trucks are cars(I) + All cars are bikes ⇒ Some trucks are bikes (I). Hence, conclusion I follows. All buses are cars (A) ⇒ Conversion ⇒ Some cars are buses(I) ⇒ [Probable conclusion] ⇒ Some cars may not be a bus(O). Hence, conclusion II follows.

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