question_answer

Directions: In each question below are two statements followed by two conclusions numbered I and II. You have to take the two given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the two statements disregarding commonly known facts.

Statements: I. All planes are birds,

II. All birds are clouds.

Conclusions: I. Some planes are clouds,

II. Some clouds are birds.

A) Only I follows   

B)        Only II follows

C) Either I or II follows        

D) Neither I nor II follows

E) Both I and II follow

Correct Answer: E

Solution :

Explanation Option [e] is correct. Let us see: All planes are. (A type) All  are clouds. (A type) A + A = A type conclusion. "All planes are clouds/' Conversion "Some planes are clouds" = Conclusion I Conclusion II is converse of the second premise. Rest of the options is incorrect because of the correctness of option [e].