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Which measurement is more precise?\newlineChoices:\newline(A) 2.8mm2.8\,\text{mm}\newline(B) 21mm21\,\text{mm}

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Q. Which measurement is more precise?\newlineChoices:\newline(A) 2.8mm2.8\,\text{mm}\newline(B) 21mm21\,\text{mm}
  1. Given measurements: Given measurements:\newline2.82.8 mm and 2121 mm\newlineWhich number has more decimal places, 2.82.8 or 2121?\newline2.82.8 has one decimal place, while 2121 has none.
  2. Decimal places comparison: Which measurement is more precise?\newlineThe measurement with more decimal places is considered more precise.\newline2.82.8 mm has 11 decimal place, indicating a higher level of precision.

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