1
Fill in: 9, 12, 15, 18, 21, __ =
2
Fill in: 0, 6, 12, 18, 24, __ =
3
7, 13, 19, 25. What is the rule? =
4
1, 7, 13, 19. What is the rule? =
5
What comes next: 66, 72, 78, 84, __ =
6
Fill in: 9, 12, 15, 18, 21, __ =
7
42, 38, 34, 30. What is the rule? =
8
What comes next: 66, 60, 54, 48, __ =
9
What comes next: 64, 60, 56, 52, __ =
10
63, 60, 57, 54. What is the rule? =
11
10, 14, 18, 22. What is the rule? =
12
2, 6, 10, 14. What is the rule? =
13
Fill in: 18, 24, 30, 36, 42, __ =
14
What comes next: 27, 30, 33, 36, __ =
15
66, 60, 54, 48. What is the rule? =
16
Fill in: 9, 12, 15, 18, 21, __ =
17
Fill in: 4, 8, 12, 16, 20, __ =
18
What comes next: 84, 78, 72, 66, __ =
19
1, 5, 9, 13. What is the rule? =
20
Fill in: 12, 18, 24, 30, 36, __ =