Statements : All windows are doors. No door is wall. Conclusions : I. No window

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Statements : All windows are doors. No door is wall.
Conclusions :
I. No window is wall.
II. No wall is door.

Options:

A . Only conclusion I follows

B . Only conclusion II follows

C . Either I or II follows

D . Neither I nor II follows

E . Both I and II follow

Answer: Option E
Since both the premises are universal and one premise is negative, the conclusion must be universal negative. Also, the conclusion should not contain the middle term. So, I follows. However, II is the converse of the second premise and thus it also holds,

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