How do you show the group of digits that repeat in a repeating decimul powit

Question

by putting a bar over them

by underlining them

by putting them in parentheses

by printing them in italics

Answer 1

To show the group of digits that repeat in a repeating decimal, the standard notation is to place a bar over the digits that repeat. For example, for the repeating decimal \(0.333...\), it can be written as \(0.\overline{3}\) to indicate that the digit 3 repeats indefinitely.

So the correct answer is: by putting a bar over them.