I have reasons to believe that my question asks to write the answer with 3 significant digits (i.e. the given numbers are with 3 digits). But there are several figures to be worked out, so I list them (for example):(adsbygoogle = window.adsbygoogle || []).push({});

3.45

3.89

7.90

...

10.23 or 10.2 (or even 10.20)?

The problem is that the order of magnitude of the answers varies and I don't know what to do: write 4 significant digits (although I should know only 3) or stick with only 3, but then the number digits after the decimal point is different.

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# Homework Help: Significant digits

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