Statements: Some roads are wide. All roads are long. Conclusions: I. Some long things are wide. II. All wide things are roads.
Correct answer: D. Only I
- A. None
- B. Only II
- C. Both
- D. Only I
Explanation
The correct answer is Only I. Conclusion I is derived from the fact that if some roads are wide and all roads are long, then the wide roads (which are roads) must also be long. Thus, some long things, which are the roads, are wide. Conclusion II is incorrect because the statement 'Some roads are wide' does not imply that all wide things are roads. There may be wide things outside the category of roads.
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About Logical Deductions
Logical deductions require conclusions to be drawn from stated facts, conditions and relationships without adding outside information. The work includes handling all, some and none statements, necessary and sufficient conditions, ordering restrictions, true or false conclusions, and the difference between what must be true and what could be true.
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