Logical deduction – "only romantic boys give roses": Which pair is a valid consequence? (i) Ashok is romantic. (ii) Ashok gave roses to a girl. (iii) Ashok did not give roses to a girl. (iv) Ashok is a romantic boy.
Verbal Reasoning
Logical Deduction
Difficulty: Easy
Choose an option
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A(ii) (iv)
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B(i) (ii)
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C(i) (iii)
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D(ii) (i)
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ENone of these
Answer
Correct Answer: (ii) (iv)
Explanation
Introduction / Context:"Only romantic boys give roses" means GiveRoses ⇒ RomanticBoy. It does not claim that all romantic boys give roses.
Given Data / Assumptions:
- If someone gave roses, they must be a romantic boy.
Concept / Approach:(ii) implies (iv) directly by the rule. Any converse pairing is not guaranteed.
Step-by-Step Solution:
Assume (ii) is true.By implication, conclude (iv) is true.Verification / Alternative check:Counterexamples exist for (i) ⇒ (ii): a romantic boy may still choose not to give roses.
Why Other Options Are Wrong:(i) (ii) assumes converse. (i) (iii) is consistent but not a consequence. (ii) (i) is weaker than (ii) (iv) because it omits "boy" and romantic status exactly as stated.
Common Pitfalls:Confusing necessity with sufficiency.
Final Answer:(ii) (iv)