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

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

  • 1Only conclusion I follows
  • 2Only conclusion II follows
  • 3Either I or II follows
  • 4Both I and II follow
Answer:- 1
Explanation:-

Solution:
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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