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 oranges are apples.
    B. All apples are guavas.
    C. No guavas are bananas.
    Conclusions:
    I. Some guavas are oranges.
    II. No apples are bananas.
    III. Some oranges are bananas.
    IV. Some apples are bananas.

    A) Only I and II follow

    B) Only I and either II or IV follow

    C) Only, I, II and IV follow

    D) Only III and either II or IV follow

    E) None of these

    Correct Answer: A

    Solution :

    Explanation Option (a) is correct. A + B gives some oranges are guavas. I is obvious from this statement. B+C gives No apples are bananas. So 18 is valid. For ill all the three statements are relevant. But the conclusion arrived here is Some oranges are not bananas. So III is invalid. IV is also invalid, since II is valid.


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