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Which is the correct bar notation of (0.0808\ldots)?

Answer and explanation

Correct answer: \(0.\overline{08}\)

In 0.0808..., the complete block 08 repeats continuously: 08, 08, 08, ... . Therefore, the bar must be placed over both digits, giving \(0.\overline{08}\). In contrast, \(0.0\overline{8}\) means 0.0888..., which is a different decimal. Exam tip: first identify the smallest repeating block after the decimal point before placing the bar.

Related tags

Number SystemsDecimal RepresentationRecurring DecimalsBar NotationRepeating DecimalsMathematicsClass 9 Mcq

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