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Subtract according to significant digit. 3.9xx10^(5)-2.5xx10^(4) |
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Answer» Solution :`3.9xx10^(15)=39.0xx10^(4)` `2.5xx10^(4)=(2.5xx10^(4))/(36.5xx10^(4))=3.65xx10^(5)` Here, LEAST SIGNIFICANT digit is 2 hence it will be REPRESENTED as after ROUNDING off `3.9xx10^(5)-2.5xx10^(4)=3.6xx10^(5)` |
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