Only thing which I learned from others who scored really well is that one must get into the depth of those 800 real GMAT questions given in OG 11th and OG 12th and that's it! rest everything is either to fill some gap or just to understand the content. But the scoring well is pretty much about Official guide.
GMATLiveTeach
Starts Oct 17

LIVE ONLINE CLASSES
Get Ready for GMAT Test Day Faster with Live Online Classes
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- Oct 17 · Chris Peckover
- Sat · 11:00 AM to 2:00 PM ET
- Oct 20 · Chris Peckover
- Tue, Thu · 8:00 to 10:00 PM ET
- Oct 25 · Josh Braslow
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