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Written by Anusha Sharma
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Wednesday, 03 December 2008 |
Natural Numbers or Counting Numbers : The numbers used for counting. That is, the numbers 1, 2, 3, 4, etc.
Rational Numbers :All positive and negative fractions, including integers and so-called improper fractions. Formally,
rational numbers are the set of all real numbers that can be written as a ratio of integers with nonzero denominator.
Irrational Numbers: Real numbers that are not rational. Irrational numbers include numbers such as , , , π, e, etc.
Whole Number: The numbers 0, 1, 2, 3, 4, 5, etc.
Integers:All positive and negative whole numbers (including zero). That is, the set {... , –3, –2, –1, 0, 1, 2, 3, ...}.
Complex Numbers: Numbers like 3 – 2i or that can be written as the sum or difference of a real number and an imaginary number.
Imaginary Numbers or Pure Imaginary Numbers: Complex numbers with no real part, such as 5i. |
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Last Updated ( Tuesday, 09 December 2008 )
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