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Statements All aeroplanes are trains Some trains are chairs Conclusions I...

This question belongs to Competitive Reasoning Logical Deduction
Logical Deduction
?

Statements : All aeroplanes are trains. Some trains are chairs.

Conclusions :
I. Some aeroplanes are chairs.
II. Some chairs are aeroplanes.
III. Some chairs are trains.
IV. Some trains are aeroplanes.

Answer & Solution
Correct Answer: Option D
Since the middle term 'trains' is not distributed even once in the/premises, no definite conclusion follows. However, III is the converse of the second premise while IV is the converse of the first premise. So, both of them hold.
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