The computer adaptive nature of the GMAT ensures that everyone faces tons of questions that are just beyond their capabilities. Some test-takers refuse to give up on questions and spend FAR too long on questions they'll never be able to answer. These perfectionists ultimately sabotage their scores. The good test-takers pick their battles.
Takeaway: Throughout your preparation, you must become adept at recognizing when it's best to invest time in a question and when to guess and move on. To do this, you must identify your strengths and weaknesses. So, as you're answering questions in the OG, be sure use an error log (aka Improvement Chart). You'll find that resource here:
https://www.beatthegmat.com/mba/gmat-error-log
If you're interested, we have a free video on the topic of time management:
https://www.gmatprepnow.com/module/gener ... es?id=1244
It talks about the steps to take on test day to keep you on track.
Cheers,
Brent