It is a rational number.
There is none
It is integer1/integer2.
Rational numbers
A ratio with denominator 0 is not defined.
And the denominator is 0
Not quite. A rational number is a ratio and each rational number is a ratio of specific pairs of integers - not ANY two integers. And, of course, 0 is not allowed on the denominator.
It is not defined.
It is not defined.
The denominator cannot be 0 because division by 0 is not defined.
It is a rational fraction.
Rational
The ratio of two integers is a fraction that represents the division of one integer by another. As long as the denominator is not equal to zero, the ratio is defined. For example, the ratio of 4 to 2 is 4/2, which simplifies to 2.