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Solution


Q.

Taking significant figures into account, what is the value of 9.99 m-0.0099 m
1 9.9 m  
2 9.9801 m  
3 9.98 m  
4 9.980 m  

Ans.

c) 9.99 - 0.0099 = 9.9801

The result should contain lesser number of decimal places. Hence correct answer is 9.98.