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  3. 10th Class
  4. Mental Ability
  5. Logical Reasoning

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: Some marbles are sandstones. No sandstone is a loadstone, Conclusions:            
    I.   No marbles is a loadstone.
    II. Some marbles are not loadstone,
    III. Some sandstones are marbles.
    IV. No sandstone is a marble.

    A) None follows                 

    B) Only I and III follow

    C) Only Hand III follow      

    D) Only either I or IV follows

    E) All follow

    Correct Answer: C

    Solution :

    Explanation Option [c] is correct. Since one premise is particular and the other negative, the conclusion must be particular negative and should not contain the middle term. So, II follows. III is the converse of the first premise and thus it also holds.


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