Is 0.12131415... Rational

The number 0.12131415... is a non-terminating decimal that appears to continue indefinitely with a pattern of consecutive integers (12, 13, 14, 15, etc.). Since it does not repeat and does not terminate, it is classified as an irrational number. Rational numbers, by definition, can be expressed as a fraction of two integers, which 0.12131415... cannot be. Therefore, 0.12131415... is not a rational number.