Real Number System

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Last updated 1:17 PM on 9/24/26
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6 Terms

1
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N

natural numbers, the counting numbers (1, 2, 3…)

2
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W

whole numbers (0,1,2,3,4,5…)

3
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Z

integers, whole number’s and opposites: …-3,-2,-1,0,1,2,3…

4
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Q

Rational number’s expressed as:

  • terminating or repeating

  • decimal or a quotient
    P/Q, ½ = 0.5


5
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Irr

Irrational, does not terminate, no repeating decimals

  • Q’s (not rational)

  • Pi

  • Square roots


6
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WATCH IT

A number CANNOT be both Q and Irr