Statements: All toys are plastic. Some plastics are harmful. Conclusions: I. Some toys are harmful. II. Some harmful things are toys.
Correct answer: C. None
- A. Only I
- B. Only II
- C. None
- D. Both
Explanation
The statements provided are: 'All toys are plastic' and 'Some plastics are harmful.' From these, we cannot definitively conclude that 'Some toys are harmful' or that 'Some harmful things are toys.' The first statement only tells us a universal set where all toys are part of the larger set of plastics but does not specify any direct relationship between toys and harmful things. The second statement indicates a partial overlap between plastics and harmful items, but this does not guarantee that toys are part of this overlap. Therefore, neither conclusion follows logically.
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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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