Number Sense Patterns Missing Operator — Set 13

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easy Set 13
  1. 5 ○ 7 = 12, what is ○?
  2. 10 __ 2 = 8
  3. 10 __ 6 = 16
  4. 10 __ 4 = 40
  5. 16 __ 7 = 9
  6. 17 ○ 8 = 9, what is ○?
  7. 5 ○ 8 = 40, what is ○?
  8. 8 __ 3 = 24
  9. 8 ○ 10 = 80, what is ○?
  10. 3 __ 1 = 2
  11. 1 ○ 2 = 3, what is ○?
  12. 3 __ 7 = 21
  13. 8 ○ 9 = 72, what is ○?
  14. 8 __ 2 = 4
  15. 24 ○ 8 = 3, what is ○?
  16. 16 ○ 10 = 6, what is ○?
  17. 20 __ 2 = 10
  18. 7 __ 6 = 13
  19. 3 __ 6 = 9
  20. 5 ○ 4 = 20, what is ○?
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