An integer is a whole number. Nonnegative mean not negative. A nonnegative integer is a whole number that is not a negative number. For example, 0, 1, 2, 3, 4, 5,....
The absolute value of a number is always nonnegative.
The set of nonnegative integers is the set {0, 1, 2, 3, 4, 5, 6, ...} Each number in this set is an "example".
it can be expressed as a fraction
Yes, -5 is a rational number
Yes.-5 is a rational number. It's the ratio of 5 to -1 .
-5 is rational
5 = 5/1 is a rational number
1
The number 5 is indeed a rational number. A rational number is one that is able to be written down as a simplified fraction. The number 5 would be written as 5/1.
It is another rational number.
Rational