11th Class Mental Ability Syllogisms Question Bank Question - Syllogism

  • question_answer
    Direction: Each of the following questions contains two statements followed by two conclusions numbered I and II. You have to consider the two statements to be true, even if they seen to be at variance at the commonly known facts. You have to decide which of the given conclusions definitely follows from the given statements.
    You are to give your answer as: (a) if only I follows ; (b) if only conclusion II follows ; (c) if either I or II follows; (d) if neither I nor II follows and (e) if both I and II follow.
    Statement:  
    A. Some keys are locks.
    B. Some locks are stickers. C. All stickers are pens.
    Conclusions:
    I. Some pens are locks.
    II. Some stickers are keys.
    III. No stickers are keys.
    IV. Some locks are keys.

    A) I, IV and either II or III follow 

    B) Only I and IV follow

    C) Only II and III follow

    D) All of these

    E) None of these

    Correct Answer: A

    Solution :

    Explanation Option (a) is correct. B + C gives. Some locks are pens. I is the conversion of this conclusion. Also II and III from a complementary pair.


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