A) if only conclusion I follows.
B) if only conclusion II follows.
C) if either conclusion I or II follows.
D) if neither conclusion I nor II follows.
E) if both conclusion I and II follow.
Correct Answer: C
Solution :
Only windows are doors \[\to \] All doors are windows (A) \[\to \] conversion \[\to \] Some windows are doors (I) + No door is a stair [E] = 1 + E = O = Some windows are not stairs (O). Hence conclusion I and II do not follow. But conclusion I and II make a complementary pair (I-E). Thus, either conclusion I or II follows.You need to login to perform this action.
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