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If the fineness modulus of a sample of fine aggregates is $4.3$, the mean size of the particles in the sample is between

  1. $150 \: \mu m$ and $300 \: \mu m$
  2. $300 \: \mu m$ and $600 \: \mu m$
  3. $1.18 \: mm$ and $2.36 \: mm$
  4. $2.36 \: mm$ and $4.75\: mm$
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