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

This question belongs to Competitive Reasoning Logical Deduction
Logical Deduction
?

Statements : All windows are doors. No door is wall.

Conclusions :
I. No window is wall.
II. No wall is door.

Answer & Solution
Correct 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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