- 11 __ 6 = 5
- 7 ○ 10 = 17, what is ○?
- 17 __ 8 = 9
- 48 __ 8 = 6
- 72 __ 8 = 9
- 28 ○ 4 = 7, what is ○?
- 24 ○ 3 = 8, what is ○?
- 8 ○ 3 = 24, what is ○?
- 10 ○ 1 = 9, what is ○?
- 21 __ 7 = 3
- 10 ○ 9 = 19, what is ○?
- 30 ○ 6 = 5, what is ○?
- 2 __ 9 = 11
- 4 ○ 2 = 2, what is ○?
- 2 ○ 2 = 4, what is ○?
- 10 __ 7 = 3
- 11 __ 5 = 6
- 2 ○ 5 = 10, what is ○?
- 7 __ 4 = 28
- 8 __ 6 = 48