Question

is 6.555... an irrational number

Answer 1

The number 6.555... (where the "..." indicates that the digit 5 repeats indefinitely) is a rational number. It can be expressed as the fraction \( \frac{66}{10} = \frac{33}{5} \). Any repeating decimal can be represented as a fraction, which is one of the characteristics of rational numbers. Therefore, 6.555... is not an irrational number.