What is the bar notation of (0.272727\ldots)?
Answer and explanation
Correct answer: \(0.\overline{27}\)
In the decimal 0.272727…, the block 27 repeats continuously. Therefore, the bar is placed over the complete repeating block: \(0.\overline{27}\). Option \(0.2\overline{7}\) is incorrect because it represents 0.27777…. Exam tip: first identify the shortest block of digits that repeats.
Frequently asked questions
What is the correct answer to this question?
\(0.\overline{27}\)
Why is this the correct answer?
In the decimal 0.272727…, the block 27 repeats continuously. Therefore, the bar is placed over the complete repeating block: \(0.\overline{27}\). Option \(0.2\overline{7}\) is incorrect because it represents 0.27777…. Exam tip: first identify the shortest block of digits that repeats.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Decimal representation.
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