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All windows are doors. No door is wall Conclusions: 1. No window is wall 2. No Wall is door

Only 1 follows
Only 2 follows
Either 1 or 2 follows
Both 1 and 2 follow

Correct Answer: Both 1 and 2 follow

Explanation:

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, 1 follows.

However, 2 is the converse of the second premise and thus it also holds.

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