What are some examples of bar notation?

Answer 1

Bar notation is a mathematical shorthand used to represent repeating decimals. For instance, the decimal (0.333...) can be expressed as (0.\overline{3}), indicating that the digit 3 repeats indefinitely. Similarly, (0.666...) can be written as (0.\overline{6}). Another example is (0.142857142857...), which can be denoted as (0.\overline{142857}), showing that the sequence "142857" repeats.