Question

Statement: No book is copy.
Conclusions: 1. No copy is book.
2. Some copies are not books.
3. All books are not copies.
4. All books are copies.

• A.
• B.
• C.
• D.

Hint:

When working with logical reasoning, carefully analyze the relationship between the set elements and ensure that conclusions align with the given statement without contradiction.

Answer 1

The Correct Option is C

Based on the premise "No book is copy," it signifies that the set of books and the set of copies are entirely disjoint. Let us evaluate the derived conclusions:- Conclusion 1: "No copy is book" - This conclusion is valid. The negation of "No book is copy" is inherently "No copy is book."- Conclusion 2: "Some copies are not books" - This conclusion is valid. If the intersection of books and copies is empty, it directly implies that any copy, by definition, is not a book.- Conclusion 3: "All books are not copies" - This conclusion is valid. The initial statement "No book is copy" directly asserts that every book falls outside the category of copies.- Conclusion 4: "All books are copies" - This conclusion is invalid. The premise "No book is copy" directly contradicts this assertion.Therefore, Conclusions 1, 2, and 3 are established as true. The correct selection is (C).