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A student says that the decimal expansion of \(\frac{13}{375}\) terminates because its denominator has a factor of 5. Which correction to the student's error is correct?

Answer and explanation

Correct answer: चूँकि \(375=3\times5^3\) है और 13 से कोई कटाव नहीं होता, इसलिए दशमलव प्रसार असांत आवर्ती होगा।

\(\frac{13}{375}\) is already in lowest form, and \(375=3\times5^3\). Since the denominator also contains 3, its decimal expansion is non-terminating recurring. Exam tip: after simplification, check for only 2 and 5.

Related tags

Number SystemsRational NumbersDecimal ExpansionTerminating DecimalsRecurring DecimalsMisconception AnalysisDecimal RepresentationMathematics

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