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Number Sets and Ordering Numbers. Symbols for Number Set. Counting numbers ( maybe 0 , 1, 2, 3, 4 , and so on). Natural Numbers:. Integers:. Positive and negative counting numbers ( -2, -1, 0, 1, 2 , and so on).
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Symbols for Number Set Countingnumbers (maybe0, 1, 2, 3, 4, and so on) Natural Numbers: Integers: Positive and negativecounting numbers (-2, -1, 0, 1, 2, and so on) a number that can be expressed as aninteger fraction(-3/2, -1/3, 0, 1, 55/7, 22, and so on) Rational Numbers: Irrational Numbers: a number that canNOTbe expressed as aninteger fraction(π, √2, and so on) NONE
Symbols for Number Set Real Numbers: The set of allrationaland irrational numbers Rational Numbers Integers Irrational Numbers Real Number Venn Diagram: Natural Numbers