Statements: Some cameras are phones. No phone is a computer. Conclusions: I. No camera is a computer. II. Some phones are cameras. III. All computers are phones.
Correct answer: A. Only II
- A. Only II
- B. Only III
- C. None
- D. I and II
Explanation
The correct answer is Option A: Only II.Here's why:Conclusion I: 'No camera is a computer' is not necessarily true because the statements do not provide enough information to rule out the possibility of some cameras being computers.Conclusion II: 'Some phones are cameras' is directly supported by the statement 'Some cameras are phones'. If some cameras are phones, then it naturally follows that some phones are cameras.Conclusion III: 'All computers are phones' is incorrect because the statement 'No phone is a computer' directly contradicts this conclusion.
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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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