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Rational Numbers Set


The set of rational numbers is an extension of the set of integers. The set formed by positive rational numbers, negative rational numbers, and zero is a new set that we call set of rational numbers, represented by Q.

Examples:

Notice the picture:

The set of Q is an extension of the set Z.

Other subsets of Q:

  • Q* is the set of nonzero rational numbers;

  • Q+ is the set of positive rational numbers and zero;

  • Q- is the set of negative rational numbers and zero;

  • Q+* is the set of rational and positive numbers;

  • Q-* is the set of negative rational numbers.

Next: Operations with Rational Numbers