Statements: Some doors are windows.
All houses are windows.
No mirror is a door.
Conclusions: I. Some doors are mirror
II. No mirror is a window.
III. Some windows are houses.
No mirror is a door (E) ⇒ conversion ⇒ No door is a mirror (E) ⇒ I.I. ⇒ Some doors are not mirror (O). Hence, conclusion I will not follow. No mirror is a door(E) + Some doors are windows(I) ⇒ Some windows are not mirror(O*). Hence, conclusion I will not follow. All houses are windows(A) ⇒ conversion ⇒ Some windows are houses(I). Hence, conclusion III will follow.
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