When the general term "number" is used, it refers to a real number. All of the following types or numbers can also be thought of as real numbers. The set of integers is represented by the letter Z.
An integer is any number in the infinite set,. Zero is not included in either of these sets. Z nonneg is the set of all positive integers including 0, while Z nonpos is the set of all negative integers including 0. The set of natural numbers is represented by the letter N. So a natural number is a positive integer.
The set of whole numbers is represented by the letter W. This set is equvalent to the previously defined set, Z nonneg. So a whole number is a member of the set of positive integers or natural numbers or zero.
The set of rational numbers is represented by the letter Q. A rational number is any number that can be written as a ratio of two integers. The set of rational numbers contains the set of integers since any integer can be written as a fraction with a denominator of 1.
A rational number can have several different fractional representations. In decimal representation, rational numbers take the form of repeating decimals. Ask Question. Asked 8 years, 1 month ago. Active 5 years, 3 months ago. Viewed 2k times. Assad Ebrahim 1, 9 9 silver badges 22 22 bronze badges.
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