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Mathematics

Which of the following fractions is not in the simplest form?

  1. 2728\dfrac{27}{28}

  2. 1333\dfrac{13}{33}

  3. 3987\dfrac{39}{87}

  4. 149\dfrac{14}{9}

Fractions

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Answer

A fraction is in simplest form if HCF of numerator and denominator is 1.

  1. HCF of 27 and 28 = 1. So, simplest form.

  2. HCF of 13 and 33 = 1. So, simplest form.

  3. HCF of 39 and 87 = 3. So, not in simplest form.

3987=39÷387÷3=1329\dfrac{39}{87} = \dfrac{39 \div 3}{87 \div 3} = \dfrac{13}{29}.

  1. HCF of 14 and 9 = 1. So, simplest form.

Hence, option 3 is the correct option.

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