Discussion Forum

In the following question, three statements are given followed by 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 with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

 Statements :  No table is fruit. No fruit is window. All windows are chairs.

Conclusions : I. No window is table II. No chair is fruit III. No chair is table IV. All chairs are windows.

Answer:

Explanation:

No table is fruit. No fruit is window.

Since both the premises are negative, no definite conclusion follows.

No fruit is window. All windows are chairs.

Since the middle term 'Windows' is distributed twice and one premise is negative, the conclusion must be particular negative. So, it follows that 'Some chairs are not fruits'.