kevincanspain wrote:

hephzi_bah wrote:Well, under my humble opinion the 12th edition is the very worst ever edition. I teach for the GMAT since 1994 and I have all editions form OG and all the possible "old" booklets since it was paper base test. 12th edition not pass the test by other OG editions....

Sincerely
Alberto Vidal

What do you find disappointing about the 12th Edition? How doesn't it measure up to the 11th?

There are a wide difference between the very GMAT test and the 12th edition. According to my statistics, the 12t Ed OG is only relevant for the 72% of the actual GMAT test; meanwhile, the 11th Ed OG is 78% accurately, but the 6th to 10th are almost the 82% of the actual GMAT test.

So the GMAT since April 2010 was different in their Math approach, as usual.....

Sincerely
Alberto Vidal

kevincanspain wrote:

hephzi_bah wrote:Well, under my humble opinion the 12th edition is the very worst ever edition. I teach for the GMAT since 1994 and I have all editions form OG and all the possible "old" booklets since it was paper base test. 12th edition not pass the test by other OG editions....

Sincerely
Alberto Vidal

What do you find disappointing about the 12th Edition? How doesn't it measure up to the 11th?

Well, everyone who takes the very GMAT and makes the comparison, will realize that a few questions on the 12th Edition OG, have the "relevance" on the very GMAT test. We know that, and according to our database we can conclude that 6th to 10th Edition OG are for almost 82% accuracy with the GMAT questions. Thanks.

Sincerely
Alberto Vidal
www.the800test.com

Thanks for the post !!

Jose, thank you so much for the comprehensive list. You saved me a lot of time (which in terms of consumer surplus is even more valuable as the D-day approaches).