Statement: All stones are rivers. All rivers are cars. Some cars are trains. Conclusions: I. Some trains are stones. II. Some cars are stones. III. Some trains are rivers.

None follows
Only I follows
Only II follows
Only III follows

Correct Answer: Only II follows

Explanation:

All stones are rivers + All rivers are cars = A + A = A = All stones are cars → conversion → Some cars are stones (I) Hence II follows. All rivers are cars + Some cars are trains = I + A = No conclusion Hence II and consequently I do not follow.

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