Q 11-01-244JEE MainJEE Main 2025 (3 Apr, Shift 1)Easy
A person measures the masses of 3 different particles as $435.42\ \text{g}$, $226.3\ \text{g}$ and $0.125\ \text{g}$. According to the rules for arithmetic operations with significant figures, the addition of the masses of the 3 particles will be:
Answer: (C) $661.8\ \text{g}$
$435.42 + 226.3 + 0.125 = 661.845\ \text{g}$.
In addition, the result keeps as many decimal places as the least precise term. $226.3$ has one decimal place, so the sum is rounded to $661.8\ \text{g}$.
Solution by Sreeraj P, M.Sc Physics