1
Fill in: 6, 9, 12, 15, 18, __ =
2
What comes next: 84, 78, 72, 66, __ =
3
Fill in: 18, 24, 30, 36, 42, __ =
4
What comes next: 24, 27, 30, 33, __ =
5
What comes next: 76, 80, 84, 88, __ =
6
What comes next: 76, 80, 84, 88, __ =
7
9, 15, 21, 27. What is the rule? =
8
69, 63, 57, 51. What is the rule? =
9
2, 6, 10, 14. What is the rule? =
10
What comes next: 33, 36, 39, 42, __ =
11
84, 80, 76, 72. What is the rule? =
12
3, 6, 9, 12. What is the rule? =
13
10, 13, 16, 19. What is the rule? =
14
What comes next: 114, 120, 126, 132, __ =
15
Fill in: 4, 8, 12, 16, 20, __ =
16
What comes next: 54, 57, 60, 63, __ =
17
Fill in: 8, 12, 16, 20, 24, __ =
18
Fill in: 12, 18, 24, 30, 36, __ =
19
Fill in: 4, 8, 12, 16, 20, __ =
20
What comes next: 39, 36, 33, 30, __ =