Question

Q42) Statement: i.All books are copies.
ii.No copies are diaries.
iii.All diaries are documents.

Conclusions:

I. Some documents are not copies.

II.All copies are books

III.Some copies are not books.

IV.Some copies are not documents.

• A. a) Only I follows
  
• B. b) Only IV follows
  
• C. c) Only I and either II or III follows
  
• D. d) Only IV and either II or III follows

Answer 1

The correct option is C c) Only I and either II or III follows

Ans: (c)
Sol: Conclusion I follows from statements (ii) and (iii). But conclusion IV does not follow. Conversion of statement (i) gives conclusion “Some copies are books”. Hence neither conclusion II nor conclusion III follows. But these two conclusions make a complementary pair. Hence, either of them follows.