https://mbagameplan.com/Tools.htm
Download this tool to your computer. This works with OG, 10th edition. The toold helps you sort out problems as per the difficulty level or per the area or your interest.
For instance, if you identify your weakness to be Ratio problems for MATH or Tense sentences for SC, then you input this, it will give you all the related problems in OG associated with your search criteria.
It's self explainatory. You will like it.
-buds
Moderators: Are we keeping track of all these useful websites shared by our fellow GMATers??