Hello all,

I was looking around on the web for official GMAT guide 11th editions but I found two books, one that has publication date of January 2005 and the other has the publication date of october 2005. Both of these are called 11th editions. They are often priced differently as well (including on amazon).

Its the same problem with the official guide verbal and quants review.

Can anyone please tell me the difference between the two editions? or is it just the paperback vs. hardcover difference?

Thanks a ton!

Shashank