Hi, I have not used the OG 10th
, but between the 11th edition AND the 12th edition I must say that the last one is MUCH better.
IMO, the excercises in the 11th edition are easy.
However, I think that the OG is not enough, try to practice the problems of this forum and of other materials. I have heard that ManhattanGMAT is good.
I think I deserve kudos
"Life’s battle doesn’t always go to stronger or faster men; but sooner or later the man who wins is the one who thinks he can."
My Integrated Reasoning Logbook / Diary: my-ir-logbook-diary-133264.html
Get the best GMAT Prep Resources with GMAT Club Premium Membership