Paper 1 · Logical Reasoning
Statements: No system is a desk. All desks are books. Which of the given conclusions follow?
- Some systems are books
- Some systems are not books
- Some books are systems
- Some books are not systems
AOnly 2 follows
BOnly 4 follows
C1 and 4 follow
DEither 1 or 2, and 4, follow ✓ Correct
Correct answer: (D) Either 1 or 2, and 4, follow — Conclusion 4, with the complementary pair, is taken to follow, so that is the answer.
Explanation
★Conclusion 4, with the complementary pair, is taken to follow, so that is the answer.
★All desks are books and no system is a desk, so those desks are books that are not systems.
★Hence some books are not systems, giving conclusion 4.
★Conclusions 1 and 2 make opposite claims about systems and books.
★Neither is separately established, so they form a complementary either-or pair.
★So the answer is 'either 1 or 2, and 4, follow'.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Shared by Mcqkart · via Mcqkart.in