Question

Explain Rational, Irrational, Real and Whole Numbers, and Integers and give examples of each.

Answer 1

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Rational Numebers:  a rational number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.  For example: 1，2，3,-1，-2，-3

Irrational Numbers: an irrational number is a real number that cannot be expressed as a ratio of integers.  For example: 1/3, 1/7 , 1/9

Real Numbers: a real number is a value that represents a quantity along a continuous line. For example: all rational and irrational numbers.

Whole Numbers: A member of the set of positive integers and zero. A positive integer. An integer.  For example: 142， 20， 1