Physics

# When $24.25\times { 10 }^{ 3 }$ is rounded off to three significant figures, it becomes :

$24.2\times { 10 }^{ 3 }$

##### SOLUTION
$24.25\times 10^{3} \rightarrow 2,4,2,5\rightarrow$ present by it has 4 significant digits.
If the digit to be dropped is 5 or 5 followed by zeros, then preceding digit is left unchanged, if it is even.
So, up to three significant figures, the number $=24.2\times 10^{3}$

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Single Correct Medium Published on 18th 08, 2020
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