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Question

Express the following fractions in ascending order:

23, 127, 521: ___, ___, ___


A

521

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B

23, 127

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Solution

  • Step 1: The least common denominator (LCD) of 3, 7 and 21 is 21. Make the denominator as 21 for all the fractions.

23=2×73×7=1421;

127=12×37×3=3621;

521=5×121×1=521

  • Step 2: Now each fraction has the same denominator 21. Arrange the fractions in ascending order by arranging numerators in ascending order.

521, 1421, 3621

  • Hence, the fractions in ascending order are 521, 23, 127.

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