What is an 'Natural Number' ?
What is its symbol ?
A 'natural number' is a positive whole number that is used for counting (0, 1, 2, 3, etc).
Symbol = ℕ
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What is an 'Integer' ?
What is its symbol ?
An 'integer' is any whole number including negatives.
Symbol = ℤ
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What is a 'Real Number' ?
What is its symbol ?
A 'real number' is any number that has a decimal point.
Symbol = ℝ
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What is a 'Rational Number' ?
What is its symbol ?
A 'rational number' is a number that can be written as a fraction or ratio.
Symbol = ℚ
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What is an 'Irrational Number' ?
An 'irrational number' is a number that can't be expressed as a fraction because it has an endless series of non-repeating digits (fr: sqrt of 2).
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What is an 'Ordinal Number' ?
An 'ordinal number' is a number that is used to describe the position of something. In programming ordinal numbers can be used to describe the index of something in a list.
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Other cards in this set
Card 2
Front
What is an 'Integer' ?
What is its symbol ?
Back
An 'integer' is any whole number including negatives.
Symbol = ℤ
Card 3
Front
What is a 'Real Number' ?
What is its symbol ?
Back
Card 4
Front
What is a 'Rational Number' ?
What is its symbol ?
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