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Math Exercise

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  • Is this a doubles fact?
    yes
  •  15
  • Is this a doubles fact?
    yes
  •  15
  • Is this a doubles fact?
    yes
  •  15
  • Is this a doubles fact?
    yes
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    no
  •  15
  • Is this a doubles fact?
    yes
  •  15
  • What is the answer?
    105
    15
    150
    5
  •  15
  • What is the answer?
    104
    140
    4
    14
  •  15
  • What is the answer?
    13
    103
    3
    130
  •  15
  • What is the answer?
    12
    120
    112
    2
  •  15
  • What is the answer?
    101
    11
    111
    1
  •  15