21.  Two men play seven games of chess.  Each man wins the same  number of games and there are no draws.  How is this  possible?
 22.  A rooster  sits on the peak of a roof.  If he lays an egg, which side of the roof will  it roll off?
 23.  A clerk in a butcher shop is 6  feet tall. What does he weigh?
 24.  A nine foot wooden ladder is  attached to the side of a boat tied to a dock.  The bottom rung is even  with the water line.  Each rung is 1 foot apart. The tide begins to rise  one foot an hour.  How long will it take to cover the bottom 3  rungs?
 25.  If a doctor gives you 3 pills and  tells you to take them every half hour, how long will they  last?
 26.  You are blindfolded in front of a  pile of 15 red socks and 15 black socks mixed together.  Selecting one  sock at a time, what is the minimum number of socks you must select to ensure a  matching pair?
 27.  What was the president's name in  1952?
 28.  How many 3-cent stamps are there  in a dozen?
 29.  How many cubic feet of dirt are  in a hole 3 feet long, 4 feet wide and 2 feet  deep?
 30.  If it takes 3 men 3 days to dig 3  holes, how long would it take 2 men to dig 1/2 a  hole?