Final answer:
The group of digits that repeat in a repeating decimal is shown by putting a bar over them.
Step-by-step explanation:
The group of digits that repeat in a repeating decimal is shown by putting a bar over them.
For example, if we have the decimal 0.3333..., the group of repeating digits is 3. So, we can represent it as 0.3 or 0.3.
Learn more about Repeating decimals