OG 13?Is it indespensible to ace the new format?

[gmatwork]

How different is OG-13 from OG -12? I understand that 13 covers IR section but how many new verbal and quant questions are available in the 13th edition that are not available in 12th edition? Is it super essential to get 13th edition to ace the test?

[tim]

most of the information you're looking for is available on our website. OG13 has about 25% new questions, so for most people who already have OG12 it is not worth getting this new resource. OG13 does provide access to some IR questions as well, but there is enough IR practice available through our CAT exams and the GMAT Prep software that you should be fine. in short, OG13 is certainly not indispensable..