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JEE Main 2025 (3 Apr, Shift 1) · Significant Figures & Order of Magnitude

Significant Figures & Order of Magnitude question from JEE Main 2025 (3 Apr, Shift 1)

Q4JEE Main 2025 · 3 APR · SHIFT 1Medium

Significant Figures & Order of Magnitude

A person measures mass of 3 different particles as 435.42 g,226.3 g435.42\text{ g}, 226.3\text{ g} and 0.125 g. According to the rules for arithmetic operations with significant figures, the addition of the masses of 3 particles will be.

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Answer: (d)

  1. 435.42+226.3+0.125=661.845 g435.42 + 226.3 + 0.125 = 661.845\ \text{g}
  2. In addition keep the least decimal places: 226.3 has 1.
  3. So the answer is (d) 661.8 g661.8\ \text{g}.
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