It is a rational number because it can also be expressed as a fraction
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A repeating decimal is rational.
No, it is rational.
1.121212121212...is rational. It is a repeating decimal and it is rational.
It is a rational number.
0.1121231234(not repeating) is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.