12th Class Mental Ability Logical Venn Diagram Question Bank Question - Syllogism

  • question_answer
    Directions: In each of the questions below are given two statements followed by two conclusion numbered I and II. You have to take the two given statements to be true even if they seems to be at variance from commonly known facts. Read the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements:     All messengers are soliders.                         All soliders are generals. Conclusions:    I All messengers are generals.                         II All soliders are messengers.

    A)  If only conclusion I follows.

    B)  If only conclusion II follows.

    C) If either I or II follows.

    D) If neither I nor II follows.

    E)  If both I and II follow.

    Correct Answer: A

    Solution :

    (a) Statements All messengers are soliders. \[\xrightarrow{Conversion}\] Some soliders are messengers. All soliders are generals. \[\xrightarrow{Conversion}\] Some generals are soliders. Conversion of conclusion,             All messengers are generals.             \[\xrightarrow{Conversion}\]             Some generals are messengers.             Only conclusion I follows.


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