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Using the number line, given below; the length of line segment AB is:

Using the number line, given below; the length of line segment AB is: Rational Numbers, Concise Mathematics Solutions ICSE Class 8.
  1. 135\dfrac{13}{5} = 2352\dfrac{3}{5}

  2. 135-\dfrac{13}{5} = 235-2\dfrac{3}{5}

  3. 4254\dfrac{2}{5}

  4. 1415\dfrac{14}{15}

Rational Numbers

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Answer

As we know, A = 145-1\dfrac{4}{5} and B = 2352\dfrac{3}{5}.

Length = 95+135\dfrac{9}{5} + \dfrac{13}{5} =9+135=225=425= \dfrac{9 + 13}{5}\\[1em] = \dfrac{22}{5}\\[1em] = 4\dfrac{2}{5}

Hence, Option 3 is the correct option.

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