Answer:
Yes, 0.3 repeating is a rational number.
Explanation:
To find : Is 0.3 Repeating rational ?
Solution :
Rational number is defined as the number written in p/q form where p and q are integers and q is non-zero.
Let the number written as,
.....(1)
Multiply both side by 10,
.....(2)
Subtract (1) and (2),

So,

The number is written in p/q form so it is a rational number.