Answer
3
Work Step by Step
$61\overline0$ L has two non-zero digits. The zero to the right is tagged, so it is significant. Thus, there are 3 significant digits.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.