<p>I saw few problems where they ask you something is # percent accurate.</p>
<p>and they give you similar numbers..</p>
<p>I know this has to do with significant figures, but don't know exactly..</p>
<p>*also, I got 740 in chem on May and I haven't studied since then..
should I retake it tommorow? I don't have another chance. sigh</p>