10th Class Mental Ability Logical Reasoning Question Bank Logic

  • question_answer
    Direction: In each of the following questions two statements are given followed by two three or four conclusions numbered I, II, III, and IV. You have to take the given statements to be true even if they seem to be at variance from the commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.
    Statements: All rats are cats. Some cats are lions. Conclusions:            
    I. Some rats are lions.
    II. Some lions are rats.
    III. Some lions are cats.
    IV. Some cats are rats.

    A) None follows                             

    B) Only I and II follow

    C) Only II and III follow      

    D) Only III and IV follow

    E) All follow

    Correct Answer: D

    Solution :

    Explanation Option [d] is correct. Since the middle term ?cats? is not distributed even once in the premises, no definite conclusion follows. However, III is the converse of the second premise while IV is the converse of the first premise. So, both of them hold.


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