Addition 1s
  • 1. 1 + 0
  • 2. 1 + 2
  • 3. 1 + 3
  • 4. 1 +4
  • 5. 1 +5
  • 6. 1 + 6
  • 7. 1 + 7
  • 8. 1 + 8
  • 9. 1 + 9
  • 10. 1 + 10
  • 11. 1 + 11
  • 12. 1 + 1
  • 13. 12 + 1
  • 14. 13 + 1
  • 15. 14 + 1
  • 16. 15 + 1
  • 17. 16 + 1
  • 18. 17 + 1
  • 19. 18 + 1
  • 20. 9 + 1
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