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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 mathematicians are physicists. Some physicists are geologists. Conclusions:            
    I. No mathematician is a geologist.
    II. All physicists are geologists.
    III. Some geologists are mathematicians.
    IV. No physicist is a mathematician.

    A) Only either I or IV follows           

    B) Only either I or II follows

    C) None follows                             

    D) Only either I or III follows

    E) All follow

    Correct Answer: D

    Solution :

    Explanation Option [d] is correct. Since both the premises are particular, no definite conclusion follows. However, I and III involve only the extreme terms and form a complementary pair. Thus, either I or ill follows.


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