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The set of numbers

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    its about some symbols that it is realated in math
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  • R=.......
    Q u Q'
  •  5
  • R+ ∩ Z=.......
    Z+
  •  5
  • R - Q=..............
    Q'
  •  5
  • 0.....R+
    Ɇ
  •  15