They are every number you can possibly get when you divide one positive whole number
by another one, or one negative whole number by another one.
Not at all. The class of "natural" numbers are all positive, but the classes of "real" numbers and "rational" numbers include negative numbers.
Rational positive numbers
Most of the time yes, positive or negative whole numbers count as rational numbers. So do positive or negative fractions.
Yes, they can.
4.5 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Not necessarily. +sqrt(2) is positive but not rational.
Rational numbers can be negative or positive.
Rational.
Not at all. The class of "natural" numbers are all positive, but the classes of "real" numbers and "rational" numbers include negative numbers.
Rational positive numbers
Positive numbers can be either rational or irrational.
No; depends on the signs of the rational numbers.
No.
nope. rational numbers must be positive.
Most of the time yes, positive or negative whole numbers count as rational numbers. So do positive or negative fractions.
Yes, they can.
Integers are rational numbers, whether they are positive or negative.