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Statements: All buses are vans. Some vans are trucks. Conclusions: I. Some trucks are buses.
II. All vans are buses. Which conclusion(s) follow?

Competition practiceSyllogism
  • ABoth I and II follow
  • BOnly I follows
  • COnly II follows
  • DNeither I nor II follows

Step-by-Step Solution

The trucks among vans may be outside the buses, so I is not certain. 'All buses are vans' does not reverse, so II fails.
Answer: D) Neither I nor II follows

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