Yes -0.6 is a rational number
No, it is rational.
It is rational. It is rational. It is rational. It is rational.
"Rational" is an adjective and so there cannot be "a rational" (and certainly not "an rational"). Any answer would depend on whether the question was about a rational number, a rational person, a rational argument or "a rational" combined with some other noun.
It is rational.
It is rational.
IBM Rational Team Concert was created in 2008-06.
IBM Rational solution for Collaborative Lifecycle Management was created in 2011-06.
Rational
1.14 is rational.
4.6 is rational.
No, it is rational.
It is rational. It is rational. It is rational. It is rational.
It is a rational number
No, it is rational.
Rational.
It is rational
0.38 is a rational number because it can be expressed as a fraction