Statements:Some trucks are buses.
All buses are cars.
All cars are bikes.
Conclusions:I. Some trucks are bikes.
II. Some cars may not be a buses.
Some trucks are buses (I) + All buses are cars ⇒ Some trucks are cars(I) + All cars are bikes ⇒ Some trucks are bikes (I). Hence, conclusion I follows. All buses are cars (A) ⇒ Conversion ⇒ Some cars are buses(I) ⇒ [Probable conclusion] ⇒ Some cars may not be a bus(O). Hence, conclusion II follows.