How do you show the group of digits that repeat in a repeating decimal? By putting them in parenthesis. By putting a bar over them. By underlining them. By printing them in italics.

Answer 1

In mathematics, the common way to show the group of digits that repeat in a repeating decimal is by placing a bar (or vinculum) over the repeating digits. For example, the decimal \(0.333...\) can be written as \(0.\overline{3}\) to indicate that the digit 3 repeats indefinitely. Another example is \(0.142857142857...\) which can be shown as \(0.\overline{142857}\).