Question

What are Integers?

Answer 1

Integers are counting numbers `{1, 2, 3,...}`, zero (`0`) and negative versions of counting numbers `{-1, -2, -3,...}`.

Some nice properties of the integers (`ZZ`) under addition (`+`) are as follows:

`n + 0 = n` for all integers `n`.

If `m` and `n` are integers, then `m+n` is an integer.

If `n` is an integer then there is an integer `m` such that `n+m = 0`.

In short, the integers are an example of a group under addition.

Answer 2

An integer can be defined as a whole number that is not a decimal or fraction, just the number itself

Answer 3

An integer is a whole number (Ex: 1, 5, 100)

Explanation:

An integer is a whole number that can be positive, negative, or zero. It cannot be a fraction.

Example:

Integers: -3, -2, -1, 0, 1, 2, 3, 4, 5, ...
NOT integers: 1/2, 0.33, `sqrt(2)`