21.
If the first two statements are true, the third statement is :
I. Martina is sitting in the desk behind Jerome.
II. Jerome is sitting in the desk behind Bryant.
III. Bryant is sitting in the desk behind Martina.

22.
If the first two statements are true, the third statement is :
I. Battery X lasts longer than Battery Y.
II. Battery Y doesn't last as long as Battery Z.
III. Battery Z lasts longer than Battery X.

23.
If the first two statements are true, the third statement is :
I. Spot is bigger than King and smaller than Sugar.
II. Ralph is smaller than Sugar and bigger than Spot.
III. King is bigger than Ralph.

24.
If the first two statements are true, the third statement is :
I. Middletown is north of Centerville.
II. Centerville is east of Penfield.
III. Penfield is northwest of Middletown.

25.
If the first two statements are true, the third statement is :
I. All spotted Gangles have long tails.
II. Short-haired Gangles always have short tails.
III. Long-tailed Gangles never have short hair.

26.
If the first two statements are true, the third statement is :
I. All spotted Gangles have long tails.
II. Short-haired Gangles always have short tails.
III. Long-tailed Gangles never have short hair.

27.
If the first two statements are true, the third statement is :
I. All spotted Gangles have long tails.
II. Short-haired Gangles always have short tails.
III. Long-tailed Gangles never have short hair.

28.
If the first two statements are true, the third statement is :
I. All spotted Gangles have long tails.
II. Short-haired Gangles always have short tails.
III. Long-tailed Gangles never have short hair.

29.
If the first two statements are true, the third statement is :
I. All Lamels are Signots with buttons.
II. No yellow Signots have buttons.
III. No Lamels are yellow.

30.
If the first two statements are true, the third statement is :
I. The hotel is two blocks east of the drugstore.
II. The market is one block west of the hotel.
III.The drugstore is west of the market.