Statement: All chairs are tables. All tables are cushions. Some cushions are trolleys. All trolleys are lamps. Conclusions: I. Some lamps are tables. II. Some trolleys are chairs. III. Some cushions are lamps. IV. All chairs are cushions.

Some cushions are trolleys + All trolleys are lamps = I + A = I = Some cushions are lamps Hence III follows. All chairs are tables + All tables are cushions = A + A = A = All chairs are cushions Hence IV follows All tables are cushions + Some cushions are trolleys = A + I = No conclusion Hence I does not follow. All chairs are cushions + Some cushions are trolleys = A + I = No conclusion Hence II does not follow.