1
Fill in: 15, 20, 25, 30, 35, __ =
2
What comes next: 10, 20, 30, 40, __ =
3
61, 51, 41, 31. What is the rule? =
4
What comes next: 20, 18, 16, 14, __ =
5
What comes next: 130, 120, 110, 100, __ =
6
Fill in: 20, 30, 40, 50, 60, __ =
7
Fill in: 6, 8, 10, 12, 14, __ =
8
What comes next: 7, 12, 17, 22, __ =
9
Fill in: 10, 20, 30, 40, 50, __ =
10
What comes next: 18, 20, 22, 24, __ =
11
Fill in: 2, 4, 6, 8, 10, __ =
12
8, 10, 12, 14. What is the rule? =
13
What comes next: 190, 180, 170, 160, __ =
14
Fill in: 30, 40, 50, 60, 70, __ =
15
Fill in: 15, 20, 25, 30, 35, __ =
16
What comes next: 20, 18, 16, 14, __ =
17
100, 90, 80, 70. What is the rule? =
18
What comes next: 1, 11, 21, 31, __ =
19
What comes next: 1, 6, 11, 16, __ =
20
What comes next: 10, 20, 30, 40, __ =