alleryWhich mark shows which digits repeat in a decimal?
AA vinculum bar
BA hyphen
CA bracket
DAn asterisk
Answer & Solution
Correct answer: A. A vinculum bar
1. Repeating digits are marked so they need not be written forever.
2. The conventional mark is a bar, called a vinculum, over the repeating digits.
3. A hyphen, bracket or asterisk is not the usual convention.
_Source: Wikipedia, Fraction, section Converting repeating digits in decimal notation to fractions_
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