Statements: All engineers are intelligent. No intelligent person is lazy. Conclusions: I. No engineer is lazy. II. Some intelligent people are engineers.
Correct answer: B. Both I and II follow
- A. Only I follows
- B. Both I and II follow
- C. Only II follows
- D. Neither follows
Explanation
If all engineers are intelligent, and no intelligent person is lazy, it logically follows that no engineer can be lazy (Conclusion I). Also, if all engineers are part of the group of intelligent people, it must be true that some intelligent people are engineers (Conclusion II).
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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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