Statements: No doors are buckets. Some buckets are trees. Which of the following conclusions definitely follows from the statements?
Correct answer D. Some trees are not doors.
Explanation
Since some buckets are trees, some trees are buckets. Since no doors are buckets, no buckets are doors. Some trees are buckets and no buckets are doors, so some trees are not doors. The other conclusions are not certain; for example, some buckets may not be trees.
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