- 9 ○ 7 = 16, what is ○?
- 5 ○ 7 = 35, what is ○?
- 2 __ 7 = 14
- 5 __ 2 = 10
- 40 ○ 4 = 10, what is ○?
- 9 __ 4 = 36
- 9 ○ 4 = 13, what is ○?
- 13 ○ 10 = 3, what is ○?
- 8 __ 5 = 3
- 11 __ 5 = 6
- 10 __ 3 = 13
- 70 __ 10 = 7
- 10 ○ 3 = 13, what is ○?
- 2 __ 10 = 12
- 1 ○ 2 = 3, what is ○?
- 15 ○ 9 = 6, what is ○?
- 10 ○ 6 = 4, what is ○?
- 4 __ 2 = 2
- 24 ○ 4 = 6, what is ○?
- 2 __ 9 = 18