GMAC , the owners of GMAT , have posted 10 sample questions on their website mba.com.These question types are under consideration to be integrated into next generation GMAT which will be delivered from June 2012 onwards.
All those who will be writing GMAT from 19th to 24th Nov. will be a part of this survey.However , GMAC has been kind enough to release these questions which can be viewed on their website.
An on screen calculator can be used to solve some of these questions.I believe GMAT will be the first amongst all MBA entrance examinations to allow use of calculators(in one of the sections atleast).
Please follow the link below to attempt the questions.
Question Formats Under Consideration