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Guess the combination

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  • +4=
    +10-6
  • +2=
    +10-8
  • +8=
    +10-2
  • +1=
    +10-9
  • +6=
    +10-4
  • +9=
    +10-1
  • +3=
    +10-7
  • +7=
    +10-3
  • +1=
    +10-9
  • +5=
    +10-5
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