Moderate

Statements: All fruits are natural. No natural thing is artificial. Conclusions: I. No fruit is artificial. II. Some artificial things are not fruits.

Correct answer: A. Only I

  • A. Only I
  • B. Both I and II
  • C. Only II
  • D. None

Explanation

To determine the valid conclusions, analyze the given relationships: 'All fruits are natural' implies that fruits fall entirely within the category of natural things. 'No natural thing is artificial' indicates that there is a clear separation between natural and artificial categories. Consequently, Conclusion I ('No fruit is artificial') follows logically, as fruits, being natural, cannot overlap with artificial things. However, Conclusion II ('Some artificial things are not fruits') cannot be deduced from the provided statements, as there is no explicit information linking artificial things to fruits. Therefore, only Conclusion I is logically valid.

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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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