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.
The address of the Meeting House Museum is: Po Box 692, Ashburnham, MA 01430-0692
The address of the Friends Of Historic Allen Chapel is: , Terre Haute, IN 47803-0692
The address of the Mammoth Site is: 1800 Us 18 Bypass, Hot Springs, SD 57747-0692
Rational
1.14 is rational.
Rational. Rational. Rational. Rational.
The address of the San Benito County Arts Council is: Po Box 692, Hollister, CA 95024-0692
rational
4.6 is rational.
No, it is rational.
It is a rational number
It is rational. It is rational. It is rational. It is rational.