Q: Is 0.12 repeating rational or irrational?

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it is irrational

yes

A repeating rational number is an irrational number. An irrational number is an number that has no definite end. 4.15 has a definite end and is therefore a rational number.

0.151515(not repeating) is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.

0.345345345(not repeating) is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.

Related questions

A repeating decimal is rational.

it is irrational

yes

irrational

Rational

No, it is rational.

No, they are rational.

1.121212121212...is rational. It is a repeating decimal and it is rational.

It is a rational number.

A repeating rational number is an irrational number. An irrational number is an number that has no definite end. 4.15 has a definite end and is therefore a rational number.

0.151515(not repeating) is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.

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.