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Fill in the blank numbers

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  • 5 6 __ 8
    7
  • 8 9 __ 11 12
    10
  • 14 15 16 _____ 18
    17
  • 7 8 9 ___ 11
    10
  • 3 4 5 ___ 7
    6
  • 1 2 3 ___ 5
    4
  • 11 12 13 ___
    14
  • 2 3 4 ____ 6
    5
  • 9 10 11 _____
    12
  • 9 10 11 __ 13
    12
  • 5 6 7 __ 9
    8
  • 20 21 __ 23 24
    22
  • 15 16 17 __ 19
    18
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