What numbers comes after 2?
3
What number comes after 9?
10
What number comes after 10?
11
What number comes after 18?
19
What number is 10 + 2?
12
What number comes before 2?
1
What number comes before 9?
8
What number comes after 14?
15
What number comes before 17?
16
What number is 10 + 5?
15
What number comes after 4?
What number comes before 7?
6
What number comes before 13?
12
What number comes before 18?
17
What number is 10 + 3?
13
What number comes before 1?
0
What number comes after 7?
8
What number comes before 15?
14
What number comes after 19?
20
What number 10 + 8?
18?
What number comes before 1?
0
What number comes after 6?
7
What number comes 12?
11
What number comes before 20?
19
What number 10 + 10?
20?