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Classify Real Numbers

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  • 3.14
    irrational  (pi)
  • 1.121212...
    rational
  • I
    irrational
  • pi
    irrational
  • Q
    rational
  • 1
    natural, whole, integer, rational
  • √2
    irrational (arithmetic square root)
  • 5
    natural number, whole, integer, rational
  • -100
    integer, rational
  • 1/2
    rational, real
  • -22
    integer, rational
  • 2/7
    rational
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