Statements: A) Most of the route-64 buses go to my office. B) This is a route-64 bus. Conclusions: I) This bus goes to my office. II) This bus does not go to my office.
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AConclusion I and II both can be drawn
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BConclusion II alone can be drawn
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CConclusion I alone can be drawn
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DConclusion I and II both cannot be drawn
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ENone of these
Answer
Correct Answer: Conclusion I and II both cannot be drawn
Explanation
Introduction / Context:The premise uses a “most” quantifier, which indicates a majority but not totality. We must decide whether a specific instance (this particular route-64 bus) can be classified with certainty as going (or not going) to the office.
Given Data / Assumptions:
- “Most route-64 buses go to my office” means: more than half of all route-64 buses go to the office.
- “This is a route-64 bus” identifies a single instance within that population.
Concept / Approach:From “most,” we cannot deduce membership for a particular element without additional information. Certainty requires universal (“all”) or explicit identification. Therefore neither “goes” nor “does not go” is logically compelled.
Step-by-Step Solution:1) Conclusion I (“This bus goes to my office”) is plausible but not necessary; some route-64 buses do not go to the office.2) Conclusion II (“This bus does not go to my office”) contradicts the same plausibility; it is equally not necessary.3) Hence, neither I nor II follows with certainty.
Verification / Alternative check:A probability intuition (greater than 0.5) cannot replace logical necessity required in such problems.
Why Other Options Are Wrong:Any option selecting I or II asserts a definite outcome not guaranteed by a “most” statement.
Common Pitfalls:Confusing “most” with “all,” or treating high likelihood as logical entailment.
Final Answer:Both conclusions cannot be drawn.