1.   How many are there?
   
    A. 4 B. 3
    C. 5 D. 6
    Hint

  2.   How many are there?
   
    A. 7 B. 6
    C. 8 D. 9
    Hint

  3.   Choose the group with 5 balls.
    A. B.
    C. D.
    Hint

  4.   Choose the group with 6 shoes.
    A. B.
    C. D.
    Hint