Hi,
i purchased the OG 11th edition a couple of weeks back. i noticed that the front cover says "answers to 800 real gmat questions". a friend of mine gave me the OG 10th ed yesterday. my eyes lit up when i saw "answers to 1400 real gmat questions". so does that mean 600 extra questions in the previous edition, which was the primary driver for my excitement. how much of a content overlap in terms of a percentage figure would i find between the two as i get down and solve these questions?
thanks