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Question

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

Statements :

All oranges are apples.

No apple is a grape.

Conclusions :

I. No orange is a grape.

II. All apples are oranges.

A If only I follows. Correct Answer Incorrect Answer
B If only II follows. Correct Answer Incorrect Answer
C If either I or II follows. Correct Answer Incorrect Answer
D If neither I nor II follows. Correct Answer Incorrect Answer

Solution

All oranges are apples (A) + No apple is a grape (E) ⇒ No orange is a grape (E). Hence conclusion I follows. All oranges are apples (A) ⇒ Conversion ⇒ Some apples are not oranges (O). Hence conclusion II does not follow.

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