Statement : All times are distances.
All distances are trains.
All trains are averages.
No average is speed.
Conclusion:
I. Some averages may not be distances.
II. Some speeds are not trains.
III. Some speeds are trains.
IV. All times are averages.
All distances are trains (A) + All trains are averages (A) ⇒ All distances are averages (A) ⇒ Conversion ⇒ Some averages are distances (I) ⇒ probable conclusion ⇒ Some averages may not be distances (I). Hence, Conclusion I follows. All trains are averages (A) + No average is a speed (E) ⇒ No train is an speed (E) ⇒ Conversion ⇒ Some speeds are not trains (O). Hence, conclusion II follows but conclusion III does not follow. All times are distance (A) + All distances are trains (A). ⇒ All times are trains (A) + All trains are averages (A) ⇒ All times are averages. Hence, conclusion IV follows. ALTERNATE SOLUTION: Minimal Possibility
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