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Class 10MathematicsReal NumbersDecimal expansion of rational numbersMediumLevel 20
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What type of decimal expansion will (\frac{21}{56}) have in lowest form?

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Answer and explanation

Correct answer: Terminating

Step 1: (\frac{21}{56}=\frac{3}{8}). Step 2: The reduced denominator is (8=2^3), so it contains only the prime factor (2). Step 3: In exams, do not decide from the original denominator; reduce the fraction first.

Related tags

Real NumbersDecimal ExpansionTerminating DecimalsReduced Form

Frequently asked questions

What is the correct answer to this question?

Terminating

Why is this the correct answer?

Step 1: (\frac{21}{56}=\frac{3}{8}). Step 2: The reduced denominator is (8=2^3), so it contains only the prime factor (2). Step 3: In exams, do not decide from the original denominator; reduce the fraction first.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Decimal expansion of rational numbers.

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  1. 1What type of decimal expansion will the rational number (\frac{3}{8}) have?
  2. 2What type of decimal expansion does (\frac{5}{6}) have?
  3. 3Under what condition does (\frac{p}{q}) have a terminating decimal expansion when the fraction is in lowest form?
  4. 4After reducing (\frac{15}{40}), what type of decimal expansion will it have?
  5. 5After at most how many decimal places will the decimal expansion of (\frac{7}{16}) terminate?
  6. 6Choose the correct statement about the decimal expansion of (\frac{11}{45}).
  7. 7Which of the following fractions will give a terminating decimal?
  8. 8Which of the following fractions will give a non-terminating recurring decimal?
  9. 9When (0.75) is written as a rational number, which form is obtained?
  10. 10If the denominator of a fraction in lowest form is (2^3\times5^2), after at most how many decimal places will its decimal expansion terminate?
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