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Statements: Only a few phones are smart. All smart phones are costly. Conclusions: I. Some phones are costly.
II. Some phones are not costly. Which conclusion(s) logically follow?

Competition practiceSyllogism
  • ANeither I nor II follows
  • BOnly I follows
  • COnly II follows
  • DBoth I and II follow

Step-by-Step Solution

'Only a few phones are smart' means some phones are smart, and smart phones are costly, so some phones are costly (I). The remaining phones' cost is unknown, so II does not follow.
Answer: B) Only I follows

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