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Solution


Q.

A person measures mass of 3 different particles as 435.42 g, 226.3 g and 0.125 g. According to the rules for arithmetic operations with significant figures, the additions of the masses of 3 particles will be         [2025]
1 661.845 g  
2 662 g  
3 661.8 g  
4 661.84 g  

Ans.

(3)

m1+m2+m3=435.42+226.3+0.125=661.845

According to least significant digits m = 661.8 g