Number Sense Patterns Missing Operator — Set 35

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easy Set 35
  1. 10 ○ 3 = 13, what is ○?
  2. 7 ○ 9 = 63, what is ○?
  3. 7 ○ 5 = 12, what is ○?
  4. 9 ○ 3 = 27, what is ○?
  5. 9 ○ 1 = 8, what is ○?
  6. 18 ○ 9 = 9, what is ○?
  7. 6 ○ 9 = 15, what is ○?
  8. 4 __ 1 = 5
  9. 70 __ 7 = 10
  10. 2 ○ 9 = 11, what is ○?
  11. 9 ○ 3 = 6, what is ○?
  12. 8 ○ 4 = 32, what is ○?
  13. 11 ○ 8 = 3, what is ○?
  14. 30 __ 6 = 5
  15. 4 __ 10 = 40
  16. 8 __ 10 = 18
  17. 7 __ 2 = 9
  18. 20 __ 4 = 5
  19. 63 ○ 9 = 7, what is ○?
  20. 19 __ 9 = 10
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